Ah cool, i thought is was you who had the 20mm pins. So after enlarging the pin hole in the A14 conrods how much meat was left, do you think it will go another 1mm on top of that without loosing strength or too much strength?

If i can then the RB20E pistons look very inviting being 78mm diameter, 32.5mm pin to deck height and 21mm pins.

Has anyone tried puting these in their A series?

By the way, what would it roughly cost me to bore it out to 78mm?