[frnkeore]

Since I'm a machine shop owner, I can measure any component to a engine. For most w/o that ability, what JSeery suggests, is the best that that can be done but, if you can measure each component, you can place them (or replace) to match OA lengths as evenly as possible, before assembling them together.

If you order pistons, you need to know the stroke length, rod length and the deck height, to get a accurate fit, for you application. That will inlude a acurate compression ratio, that is so important in a FH.

Frank