Have put a A14 crank into an A12 with std bore =1289cc but had to machine 3mm off the top of the piston was ok for a street motor but would not suit what I need in comp ratio to run the E85 fuel I run.
A14 crank with 77.5mm flat tops still only get you 1453cc
The motor the blew up had 79mm flat top fly cut pistons =1510cc

I will have to put a lot of thought into what I am going to do this time as the 1510cc motor I had to mortgage the house to build it haha.