Folks,   [Yes, it's really a 312, ECZ crank, main caps, and rods out of a '57 Mercury wagon a very long time ago now.]
"Search" isn't working for me again, so...:
1.  What is ideal quench range between piston top and head quench area?
2. I'm looking for new composite and original equip't steel head gasket crush (I know that I saw it here recently - just can't search it!)
3. With typical replacement pistons being "down in the hole", I thought that using EBU-dimension rods (0.072" longer C to C at 6.324"), rather than the original ECZ rods (at 6.252" C to C), quench might be brought back up into the appropriate range when using composite head gaskets.

Critique, comments, please.

Thanks,   JLB

55 Ford Crown Victoria Steel Top