Mopar R3 Block

Yes, the 48° has a big advantage in a all out build, valve train stability especially, and the shorter deck combinations allow a lighter reciprocating weight, at the expense of long strokes. But the OP said he was interested in a big inch street build, with victor heads, and in THAT PARTICULAR case, the the 9.6 deck, 59° combo is going to be much simpler. And cheaper.
And he was asking about a hydraulic flat tappet cam. That will be a total waste of time, money and good parts if he goes that way. He is obviously gonna need a lot of guidance. But then again that is what he is asking for and getting from some members. Kim