Im new to this sight and this winter im planing on building a 6.5 engine and installing it in a truck. I have did some checking arround and have decided on lowering the compressen to 16:1 putting on a non wast gate turbo, and installing a pensler pump and different injectors. I have a frend who pulls tractors and he knows of a place that will lower the compressin for $50 a hole. i was wondering if any one has gone with this low of compressen and if they had any problems with it. also i plan on running stalk cam, crank and heads and wonder if i should change them any. biger valves are out of the question due to cost. Thanks for any help you guys can give me.