Again, you would be better spending the money on a 38ci block, or at least a 35ci block rather than trying to bore the 30ci or make it a stroker. I've used just about every combo out there for the vannys, and the best way to go is start with the bigger ci blocks. I have several 35ci horizontal blocks here I can make a good deal on. A good used 38ci horizontal is a rare find these days.