My 440 is almost exactly the same as the OP's. The only differences are the cam (Engle .534 lift, 238@.050") and intake (Performer RPM).

Right now I'm leaning towards either the E Streets or the Pro Maxx heads as the best bang for the buck heads to replace my bone stock 452s. This might be blasphemy but I've been hearing that the casting quality and flow numbers are actually better with the Pro Maxx heads than the Edelbrocks.