Great people on here how about this for grin and giggles since it appears that the heads I have been milled quite a bit how about going with the 400 using 440 Source Stealth heads - stock length rod - 383 forged crank - KB184 (440) pistons with a compression distance of 1.992 without checking the true deck height just going by reference figures that would put me up around .0575 is that to much out of the hole of course head gasket thickness can be used to compensate