Is it worth my time? Is it worth my money? How much will it cost? What will i need to change/replace? I have a 89 RS that id like to drop an LS1 into, i know that im looking at 2k to 3k for a donor car, id like to know the other costs and whatnot im going to encounter if i do this.

 

there are no less than 200 posts on this forum about putting a LS into a third gen..

but to answer these questions for about the 30th time..

1. Yes
2.Kinda
3. ALOT!!
4. Almost everything

Youll never find a 2-3k donor car with an LS in it. never. Sorry to burst your bubble, but unless you have some kinda connection to this third gen, sell it and get a LS 4th gen.