Ed,
A cell phone call got this out of the October 1, 1967 P&A:
No listing of 6416148.
67 ALL (327, 350) (2nd design),
67 Camaro (302),
67 Chevy w/dual exh. (283) (1st design),
68 ALL w/4BC (327, 350).....................(type 40524) .............6416886
[some Chevy & Chevelle info. on 40503]
67 ALL (327, 350) (1st design),
68 ALL (307) .........................(type 40503)...........................6416712