Keiths is a damaged GT3 RS with a factory cage.... and is probably a '20t excavator'. His 944 is a left hook, and rego'd as SI
I think there is some trickery you can do with how you pay for it to get round LCT. Buy the 'car' with 1 cheap payment, and they pay separately for the parts. If it's all done o/s it's hard to prove the price
The yanks have really weird rules, and they have to dismantle cars, and bring them in as 'parts'