the biggest pain in this whole idea is the lack of off-the-shelf pistons, but yes, this has been a serious learning experience on getting the right combo of R/S ratio, CH heights, comp. ratio, etc., etc.

Since there hasn't been too many engine builders doing this combo, we're all in the theoretical stage it seems like.

Does anyone have a spare stock rod and piston they care to "donate" so I can mock up my engine w/the 4.15" crank to see if there's any interference?

I'm definitely going w/that crank; it's just a matter of what rod to go with: 6.358", 6.385", 6.535" BBC (but definitely NOT the 6.76" RB rod). Then from that, I can figure out how to order custom ($$$???) pistons.

Hoping the whole rotating mass to be under $2k.