forget that A14 rod in an A12 block comment. They won't fit with any production piston option.

See, I bought an engine a while ago that was supposed to be an A12 block with 76mm A14 pistons, which I plan to use as a base for the turbo engine this year. I disassembled the engine yesterday and it had A14/15 rods.

Today I was investigating piston options for that motor, but my sums wouldn't add up. I couldn't work out how it was all supposed to fit in the A12 block. So back to the shed I went with a measuring stick, and I discovered that this block is actually at A14/15 deck height and has an A14 crank to boot. It's stamped A12, but is obviously a bit of a dodge job! Looks like I may have stumbled across an old rally engine

on the topic of pistons, this is what's out there in 76mm diametre with 19mm pins:

E15 comp ht: 32.10 dish: 22.2cc
E15T comp ht: 33.10 dish: 23.5cc
E16 comp ht: 32.10 dish 18.4cc
GA16DE comp ht: 29.10 dish 12.3cc

there were no stats on the dish for the A14 and A15 piston in the ACL catalogue...

btw, the A12 piston comp ht is 31.95. And your 120Y should have the late rods with 19mm pins already.