Carter Thermoquad

Cid, what stroker said. The OEM 4bbl. flows very well. The Performer doesn't best it. Only in the weight department.
Theres a pair of performers for sale in the parts section here now. (Clean up is cheap.)
The next step up over a cast iron in terms of performance WITH a T-Q would be a Action Plus or an adaprt on a RPM. Otherwise, a MP-M1 single plane is it, but that's moving away from what your at and going.

And yes, it flows like a big sewer pipe but does weigh more. LOL!

(OH, as per the PM, Wading river is about 25 minutes from me.)