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Some manafacturer's show a different hydraulic flat tappet lifter for hemis than wedge and some show the same part #.Some show a different lifter for pre 67 wedge engines and show that as the same lifter for hemis(the pre 67 wedge part #).?

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1967 was a transition year for Mopar motors on lifter pushrod cup sizes, 1966, and probally some early 1967 motors, had 1/4 inch ball cups, 1967 and later switched to 5/16 ball. In 1969 when the 440 6 paks motors came out Mopar had those cams ground on a low taper angle with matching hydraulic lifters,they also had the cams ground on 3 bolt cores and used the street Hemi double roller timing sets In 1970 when Mopar switched the 426 Street Hemis to hydraulic camshafts they evidentily used those lifters in them also IHTHs