Big questions are what do you want to spend, are you doing it yourself and do you have the time? With that said, I swapped in a 93 LT1 and 700r4 into my 90. While i have been happy with it and wouldn't trade it for anything it was a lot of work. Right now I am swapping the LT1 for an LS1 from a 99 camaro. SO either I am crazy or it was worth it. If you want some info hit me with a PM or email. A stroked 4.0 is a nice option too, but I am kinda partial to the swap. EIther way, even with doing it all yourself It would be next to impossible to do it for under 3,000. But with the prices of new cars and the like and how crazy people are getting with mods and custome stuff, I guess that is not outrageous.
Dustin