Yeah nice bit of kit. The ute tank idea was mainly because the pump mounting area is recessed and has rebates for the fuel lines so might look a bit neater than the other flange setup you can buy. And cheaper.
Anyone got any clues about efi using a non return line setup?
So a 'returnless' fuel system isn't actually return less as such. It more means that the regulator is not in the engine bay, and there is only one line going to the engine bay.
On some vehicles you have the fuel filter which also acts as a regulator, and has a an extra port to hook a return line to. This can be mounted close to the fuel tank, so you only have a short return line.
Other cars have the regulator in the tank as part of the fuel pump assembly. This dumps the excess fuel straight into the tank. I believe it's an emissions thing due to not heating up fuel for the sake of it and creating more vapor, but I'm not positive on that.
Either way we are lucky on our cars, 69-70 fuel lines fit 64-68 cars super easy, and you only have to take your rear wheel off to install it. And they are 3/8th, and they are cheap and durable. I installed two, one for feed and one for return. And unlike the early models, it runs no where near the exhaust or driveshaft now. Start and end points are exactly the same positionhowever.