The Bottom End I pieced together. It's a 4-Bolt Main from a Vette at a Junk Yard that was in real nice shape, the Factory Crank from it, Speed-pro Forged Pistons, Eagle 5.7" Forged Rods, Clevite 77 Bearings everywhere in it, Moly Rings. Then I had it balanced and put it together with just about all of my stuff from before. I got a LT4 Extreme Duty Timing Chain in it, and junked the stock one. I upgraded alot of stuff while I was there. The Machine work was $400, and that was to clean the Block up, press the Pistons on the Rods, install Cam Bearings, and to Balance it. It's alot smoother being balanced. I can tell already, and I don't take it past 3,000 RPM's.