Red coupe wrote: For like 25 you could buy an S13, refresh everything, legally swap a V8, and have whatever a totally unique flashy car that would absolutely destroy what ever skyline you would import. And it wouldn't really be to much more work/time.
Technically, this is untrue. USDM S chassis = legal. USDM V8 = legal. USDM S chassis + USDM V8 = illegal. I think it's on the NHTSA's website (and I'll post a link if I'm not too lazy to look for it), but there is a statute that states that motor swaps from the same model, same year or newer are the only ones which are legal. In other words (as far as the feds are concerned), it's KA or nothing for 240s.
That doesn't mean that you will be monitored, followed, wiretapped, etc. by G-men in the event you do a swap. It doesn't even guarantee you will be busted when going in for a state inspection/emissions (if your state has either). Just that if 'it' does hit the fan, it is in writing that you are in the wrong, and penalties can be assigned to you.
Not that that has stopped anyone before, but I only feel it fair to put the word out.