I run a lot of Clay Smith Camshafts and lifters (Buena Park CA.)
Their products are not E bay type cheap but neither is losing
an engine.
They race NHRA National Race winning stuff from
Stock Eliminator to Top Fuel (Langdon family are the owners).
I have never had one of their cams go flat or have any lifter
issue in over 50 years. However, I do know something about
what I am doing with this stuff after 70 years at the track.
I have to bush the lifter bores in the Stock/SS racing we do.
If for no other reason than the geometry angle on Mopar blocks
varies all over the place. At a 500HP level I believe imprecise Camshaft
operation can cost you 10 to 20 HP on some blocks with significant variance.