Year-by-year hub

Pick a per-year B-body 115/119-inch Impala deck — covers the 1955-onward Tri-Five Bel Air top-trim, the 1958 Impala launch on the 348 W-head, the 1961-onward SS trim opening at 350 hp, the 1966-onward 427 L72 big-block, the 1969-only ZL-1 Z16 homologation window, and the 1971-1973 emissions-era SS closure.