I'm writing an all-brands book on OEM Detroit performance V8s. One aspect I'm trying to include is the number of cars produced with the engine under consideration.
For Mopar's top 375 hp 440 cid 4 bbl spec I have 1967 numbers from the Govier publications. B-Body (and the rare A-Body) production with the top 440-4 aren't too hard to find for the remaining years through 1971 (albeit 370 hp in 1971).
So, the production number holes I'm trying to fill are for the C-Bodies with 375 hp in 1968-70, and 370 hp in 1971. Totals across Dodge, Plymouth, Chrysler C-Bodies would do, though breakdowns by brand would be most helpful.