We all agree it is an HP manifold, and according to my book it is correct for 68-69 C body with either 383 2bbl. and 3 speed trans, 383 4 bbl, or 440 HP. 3 speed??? A friend of mine has a 68 Fury 383 4 speed car, but I don't believe I've ever heard of a 3 speed in a C-body, although we are talking Mopar, so of course it's possible. Best way to see if it'll fit is to mock it up, any other way is just a question. I'd bet it won't, but I'd try anyway!!! Good luck, Geof