Quote:I am using a 1200 block, with an A14 crank that uses A12a rods to move the 77mm A15 pistons up & down.

I am doing this....
Because the A12 block fits the KB10 chassis without mods.
Because it still looks like a 1200 when finished. To the untrained eye, it may even be mistaken for the original A10.
Because the whole thing can be made to appear "factory."
Because it's relatively unique, as i'm sure that very few will duplicate it.
Because i can.

I see 77mm as a practical upper limit & my block is already at 76.5mm, so i guess that i will give it one more try.