im looking to put in some aftermarket pistons and rods..imlooking to raise compression to about 12:5 on pump gas 93 octane. Everywhere i look i only see pistons for turbo motors. Does anyone have a website where i can purchase some high compression pistons? But then i wonder if you change the compression on the motor i need to have the K-pro right? i couldnt run #4 with it and expect good gains, could I?