2332owner,
I have a bored and stroked A12. My block is a 71 model and runs an A14 crank. Hope this helps.
Oh and by the way - you wont be able to run your new stroked motor whilst the oil dipstick is installed otherwise the crank will eat the dipstick. I just use a dummy dipstick and keep the original one in the cabin and use it when I have to check the oil.
There is not much room inside the little A12 block when you are swinging an A14 crank.

Paul.