Original factory assembly, for 335-series Cleveland w/ 2 barrel & 4 barrel use. Stamped steel outer and inner eccentrics, includes a special thick flat washer and Grade-8 hex-head bolt. From a ’71 351C 2V also suits ’70 / ’72 / ’73 models, been stored for about 40 years, however the 351W / 429 / 460 pieces are different. It’s an OEM Ford set with the correct form & fit for a LTD / XL / Galaxie / mach 1 / Grande / Boss 351 / convertible / GT / Gran Torino / Ranchero / Mercury Monterey / Cougar XR-7 / Eliminator / Cyclone / Montego, why go repro.