Stockish 340 upgrades, cam needed

I have been spying on this thread and not saying anything because so many good opinions and experts on the subject. But one factor I haven't seen maybe I missed it was tire size? and vehicle weight. have you mocked up the rocker arms yet with the pushrods find clearance problems you may or may not want to relieve . most people just go back go 1.5 I don't see that you will be able to take advantage of a modern fast rate cam with 323 gears. I would use 00.51 cemetic head gasket and move on . I would also look at the Howard Rattler Series hydraulic camshaft I believe it will be forgiving on the bottom and also have a very nice chop,chop 227/234@50 on108 very nice combo if tire size does not exceed 26in diameter.