if you dont want an ls1...
how about buying my LT1 formula.. cammed, headers, tuned, and every bolt on... a 12.1 sec car... and then parting the body out for $... plus it already has everything you would need for a swap... wairing harness pcm, tranny (M6 now that woud be sweet)... plus the price is a good one and after selling parts you would have money in the bank. But its just an idea.
you will have to keep me updated especially on the swap... i was actually looking at my vx parked by my formula tonight and was wondering about if i could possibly switch the motor...