These are a set of 4 rocker arm for any Stock 1966-1971 Hemi engine.  Each engine uses 8 arms so this is a set for any hemi engine.

The shafts will fit any Mopar with a HEMI from 1966, 66, 1967, 67, 1968, 68, 1969, 69, 1970, 70, 1971, 71, including the Coronet, Charger, 500, Super Bee, Superbee, Satellite, GTX, Belvedere, Road Runner, Roadrunner, Belvedere, Dodge R/T, RT, 440, six pack, Plymouth Barracuda, ‘Cuda, or Challenger.