Took a car over recently. I put my GTR over in May and they hardly looked at the thing... easier than getting the modified Commodore over. Still had to get child restraints, unleaded fuel filler neck, etc...
When I put another car over just a couple of months ago, things have now changed. You now have to pick up a check list from the DOT that and engineer has to tick and sign off. You still have to do things like side intrusion bars, child restraints, flat drivers mirror but you also have to have an O2 test done on a dyno.
Seat belts themselves have to not only be in good condition but also have a particular approval number on them as well as brake lines. I had to replace all of these@
It's all just rubbish red tape to stop people importing.
The car was a van for crying out loud!
The trick is to find a good engineer that is well respected by the pits - Welshpool are great. A bunch of no nonsense guys (good on 'em).
Once this was done it cruised over the pits.