340 to 372 stroker kit

Wow, that's a lot of money. Why not just get a 360 and use it. Bore it 30 over, put on your heads and call it a day.
That was actually my next suggestion, this with w2 heads will easily achieve the 460 hp goal. There are many FABO members with very hot running 360's. You would be money way ahaead doing this. If the 340 block sonic checks well, use it. One has to be realistic about the outcome vs. Financial outlay.

The first thing I would do is read the book I suggested a few posts back.