383 Body manifolds in an A?

I am thinking of detuning my 383 a bit and putting it in my Formula S.I seem to remember seeing an A body with a 383 and B body manifolds on it.What modifications if any are needed to do this?What year manifolds?I figure B body manifold breather alittle more and are way cheaper.
I would like to keep the motor as is but 383.TTI's and a 4speed just don't go well together.I couldn't get the Zbar to fit.

Thanks,Jim