Johnno, yeah they can, as long as they are not V8's, turbo's or supercharged (non diesel) or prohibitive vehicles due to power to weight. If a P plater in Victoria needs an exemption due to work or family hardship, they can apply to Vic Roads for the exemption.
So there is a market for LHD 6cyl Mustangs.
Legal stuff.
Road Safety (Drivers) Regulations 2009 - SECT 56
Probationary prohibited vehicles
56. Probationary prohibited vehicles
(1) Subject to subregulation (2), for the purpose of regulation 57, a
probationary prohibited vehicle is a motor vehicle (other than a motor cycle)
that-
(a) has an engine with 8 cylinders or more; or
(b) has an engine that is turbocharged or supercharged (other than a
diesel powered vehicle); or
(c) has an engine that has been modified to increase the vehicle's
performance (other than a modification made by the manufacturer in the
course of the manufacture of the vehicle); or
(d) is declared by the Corporation under subregulation (4)(a) to be a
probationary prohibited vehicle for the purposes of this regulation;
or
(e) has a modification declared by the Corporation under subregulation
(4)(b) to be a high powered modification.
(2) A probationary prohibited vehicle does not include a vehicle declared by
the Corporation under subregulation (4)(c) not to be a probationary prohibited
vehicle.
(3) For the purpose of subregulation (1)(b), an engine is turbocharged if a
turbocharger is installed in the vehicle, whether or not it is otherwise
attached to the engine.
(4) For the purpose of this regulation, the Corporation, by notice published
in the Government Gazette, may-
(a) declare that a vehicle or class of vehicle is a probationary
prohibited vehicle; or
(b) declare that a modification to a vehicle or type of modification to a
vehicle is a high powered modification; or
(c) declare that a vehicle, other than a vehicle with an engine having 8
cylinders or more, is not a probationary prohibited vehicle.
Road Safety (Drivers) Regulations 2009 - SECT 57
Offence to drive probationary prohibited vehicle
57. Offence to drive probationary prohibited vehicle
(1) The holder of a probationary driver licence must not drive a probationary
prohibited vehicle on a highway.
Penalty: 10 penalty units.
(2) Subregulation (1) does not apply to-
(a) the holder of a probationary driver licence who is driving a
probationary prohibited vehicle-
(i) in the course of his or her employment and at the request of his or
her employer; or
(ii) subject to subregulation (3), in the course of his or her business or
to or from the workplace of that business; or
(b) the holder of a probationary driver licence who is exempt from the
requirement in subregulation (1) by the Corporation in accordance with
subregulation (4); or
(c) a member of the police force who, in the course of duty, is driving a
motor vehicle; or
(d) a person who is driving a probationary prohibited vehicle that is also
a heavy vehicle if-
(i) that person does not hold a driver licence that authorises the holder
to drive that motor vehicle; and
(ii) he or she is the holder of a driver licence of another category; and
(iii) a person who holds an Australian driver licence which is appropriate
for the category of vehicle that is being driven is sitting beside him
or her; and
(iv) there is a driver under instruction plate affixed to, and facing out
from, the front and rear of the vehicle.
(3) Subregulation (2)(a)(ii) applies only if an Australian Business Number is
in force in relation to the person's business.
(4) The Corporation, by written instrument, may exempt the holder of a
probationary driver licence from the requirement of subregulation (1) if-
(a) the vehicle has an engine that is-
(i) turbocharged or supercharged; and
(ii) has a power mass ratio of less than 100 kW per tonne; or
(b) the vehicle has 4 or more seats, and has an engine that is-
(i) turbocharged or supercharged; and
(ii) has a power mass ratio of 100 kW per tonne or more but less than 125
kW per tonne; or
(c) the nature of that person's occupation, essential activities or family
circumstances is such that compliance with the regulation would impose
undue hardship on the person or the person's family.
Note Under regulation 36, the Corporation may impose conditions on a driver
licence issued to a person for whom a requirement has been dispensed with
under this regulation.
(5) In deciding whether or not to grant an exemption under subregulation
(4)(b), the Corporation must have regard to-
(a) the likely effect of the decision on safe, efficient and equitable
road use in Victoria;
(b) the characteristics of the vehicle, including whether it is designed
for sports performance rather than family use.
(6) In deciding whether or not to grant an exemption under subregulation
(4)(c), the Corporation must have regard to the likely effect of the decision
on safe, efficient and equitable road use in Victoria.
(7) In this regulation-
power mass ratio, in relation to a motor vehicle, means the ratio between the
power output of the engine of the motor vehicle at the time of its manufacture
including any additional output resulting from any modification to the motor
vehicle after its manufacture expressed in kilowatts and the unladen mass of
the motor vehicle expressed in tonnes.