Header options for a B-engine stroker in a Dart?

Lustle said

Same block. So same headers should work. Why do you think the schumakers won't flow enough? What size are the tubes/collector?

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The Schumachers are 1-5/8 tubes with a 2-1/2 inch collector. We're looking for hp in the 550-600 range on the stroker and I just think that's asking too much from 1-5/8 tubes.