Mopar’s Crate HEMI Engine Kits let owners of any 1975-or-earlier Mopar bolt in genuine modern HEMI power — 383 horsepower from the 5.7-liter kit or 485 horsepower from the 6.4-liter version — without chasing down custom wiring or tuning. Each kit ships with an unlocked, pre-calibrated PCM that sidesteps the usual factory security headaches of a late-model engine swap. Debuted on two complete builds at the 2016 SEMA Show, the kits have owners of everything from Dusters to Aspens asking if their own project qualifies. Watch the full rundown of what’s included.