looking at piston chosices These 10.5:1 forged pistons, when used with Screamin’ Eagle 1340 Cylinder Heads, are designed to produce high compression ratios for full race applications. Kits include pins, clips and rings. For race application only. For use only with Screamin’ Eagle Performance Cylinder Heads ’84-99 Evolution 1340-equipped carburetted models. (Not for use with stock Evolution 1340 Cylinder Heads.) NOTE: Always check piston-to-valve clearance with modified dome pistons and non-stock cam shafts. 22767-98 10.5:1 ratio .010" o/s. (pair) 22768-98 or should is there a company that makes the same piston for less money?????????