Max wedge manifolds

The intake ports on the maxi heads were significantly different from the normal BB head. They did have a larger than normal exhaust valve. Unlike the intake manifolds the regular BB headers or exhaust manifolds will bolt up the same.

I do know they re-pop the maxi exhaust manifolds, Mancini offers them and they are still expensive but not as much as original ones when you can find them. I see a set on CL locally for $700 re-pops.

However to answer the other half of your question, will they work on an early A BB conversion? I do not know the answer.