Yes, the '774' profile are the same as the Piper Ultimate profile in every respect.
I'd personally avoid the re-grinds from Piper since they will have a smaller base circle and pose an immediate issue with respect to setting the valve clearance. I'd imagine the fresh cams ground from blanks would be to a standard base circle, but I would double check this prior to ordering. Stock base circle FYI is 32mm.
