420A head install on 4g63 block

can anyone help with a question? i was wondering if you could put a head from a 420a on a 4g63 block. I want to build a stroker motor, and i already have a 420 head. Is there a difference between the two blocks?

yes, its completely different engines

so time to go head hunting

in that case, does the transmission that came with the 420a match up to the 4g motor?

again, completely different engines

nothing matches up

so time to go tranny hunting also