Hi there.
Things I was told about were the following, but I have a 65 (I wouldn't think there'd be too much difference):
1. Buy new headlights and get them adjusted to how a RHD car is.
2. In my case I had front seatbelts, I was told to remove them as a 65 car doesn't need seatbelts. If I left them in, they would have to comply to Australian standards. Apparently in SA, no seatbelts is safer than American seatbelts, go figure!!
3. Make sure there is no oil leaks of any sort.
4. They will check all the cables to the brakes for cracking and wear. It's easier to replace them all. I did the rear brake calipers too. I wanted to be sure the car stopped.
5. Make sure all electrics work, especially demisters, wipers and wiper spray, blinkers etc.
6. If you're car doesn't have the block stamped, use the engine casting date as the engine number. Let me know if you don't know where that's located.
7. Almost forgot, the car had to have a side mirror on each side of the car, not just the drivers side.
Note that my car is LHD.
That's all the info I have on what I was told.
Good luck.
Regards,
René