Re: 290hp Gmpp 350
GM has a roller cam equipped "crate" engine long block rated at 280hp. and it can be found for $1500-$1900- if you get a dealer willing to deal.
it is a replacement engine for a TBI 350 equipped 92 Caprice- non cop car.
it has hyper pistons, PM rods, steel crank, and a roller cam.
sure, it has the crappy TBi heads on it- but a guy could possibly sell them off for a few hundred $$$ and put that money towards a set of Vortecs and have a 300+ hp engine for a couple grand.
of course, you might not be able to run a mechanical fuel pump with that cam, but if you swap in a HOT cam kit when you do the head swap, then you've got a 400hp engine for about $3k....
you don't plan sincerity.
you have to make it up on the spot.
wanna hear about 20 years ago when i was too smart to know any better?