i ment stage 2+ on the ko4 as its about 350bhp,
i was going to do the same and put a Ko4 on mine after i cracked the ko3, but then was advised that pistons may get bent. The edition 30 block has uprated internals over the ko3.
Im not the most nolidgeable on here! lol, but im sure somebody will be along soon to explain a little better than me