using a short block from an '89 astro (TBI), with heads/intake/FI from 00 blazer. read before the newer setup on the older bottom is supposed to give me an extra 20 hp at the flywheel... don't know if it's true, but I bought the astro from the neighbors kids for $100 about 2 years ago, and had bought the blazer for $500, and harvested everything off of it (2wd front brakes, rear discs, roof rack for the gypsy wagon project, seats,console, even cut the roof off for floorboard patches on the wagon, sold the front clip and a few other parts to a buddy with an s10... what was left over looked like a turkey carcass the day after thanksgiving...with the parts I kept, and the $ I got from my buddy and the scrapyard, I came out on the positive side...)