Mopar lifters, both hydraulic and solids had two different cup heights, 1952 to 1967 had a lower cup height than the 1967 and later lifters have.
OP, how about having your current lifter set bottoms reconditioned by a good cam regrind company? work scope twocents


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)