I was able to pick up the k20a2 crankshaft/ rods and piston for relatively cheap. The goal is to go turbo. I plan on using what I already have k20a3 head and intake manifold Unless I can find these other parts at a discounted price. My question is once I rebuild (compression ratio increase to 11.0.1) will I be able to break in the motor without kpro. (mainly because I don't want to invest further into the build until I know I rebuilt the engine correctly) it would stuck to buy kpro and I messed up the rebuild anyways. the main reason I decided to go with the k20a2 shaft was it was relative cheap to get one and I wanted the beefier rods.