I am starting research on installing a new engine into my 89 RS.
I was just tooling around in nextgenparts.com and ran across some emissions stuff that left me with a couple of questions that I hope someone can help clear up for me.

There appears to be a rating system developed by SEMA that would indicate any applicable parts emissions rating where 1 is legal in all 50 states 2 is legal in all states but Cali and 3 is not legal for road use at all. Problem is all but one of the engines on this site is rated a three. Question is does this apply to the engine before or after additional emmissions control parts are added on? like from the cat to the rear etc.

What should I keep in mind when approaching this issue in general, bearing in mind I do want a street legal machine and I dont really plan on taking it to California?

Also is there a place I should or could go or call to find out about swapping the 2.8 V6 with a V8 where I can get the right answers on emmissions and even more information that I might be too ignorant to ask?

I live in Missouri if that makes any difference.

Thanks, Chip

PS Sorry bout the double post over in engine swaps also