just wondering how hard it is to install a ls1 in a 3rd gen,
also about a/c and smog pumps and other acc. would i use third gen stuff or the 4th gen stuff,

 

since the lt1 fits in there, i should imagine you coudl fit an ls1 in the engine bay, i would think you'd have to use the ls1 accessories. or else delete them...

 

http://www.speartech.com/coproj-1991ls1.html

Has some nice pictures

 

Do a search on the board. There was a big discussion about this not too long ago.

Yes, it can be done. Very expensive, lots of modifications need to be made.

If you were to do it you'd have to use all the ls1 accessories etc.