With all the model 7 saum actions and the 673 6.5 and 350 mags floating around for cheap, would these be a good platform for a 450 conversion?

I'm thinking of doing an 18-20" barreled stalking rifle (we have a hog problem). 673 donor action, laminated stock should be servicable. Maybe a barrel band and peep sight/hooded front for fun. Or maybe a leupy 1-4 and qd's