compression??????

[randallp1]

hey guys im running a426 11:1 comp and i saw a 12:1 compression on ebay.(someone bought it) can you feel the diff between 11 and 12? besides the race fuel part. also does anyone know if someone sells a 12:1 compression piston for a 426?

[drew416ex]

I could tell a little diff in the low end with a 12.5:1 on my 416. Im not sure who sells it in a 426.