Not as sure on trucks, but Chevy put 327's in the Corvettes, Chevelles & Novas in 67. Basically all the SS cars. I think the 4 speed for 67 was a Muncie. At least I think that was the case. I'm sure someone who knows far more than I can add to that.
Off topic, but didn't the vette have a 427 option too around that time?
