Exhaust manifolds for my '65 327/300HP 4-speed

[Twan B.]

Somebody told me that i've got the wrong exhaust manifolds for my '65 Corvette 327/300 HP 4-speed. And I do need the 2" pipes ??????
The following manifolds are: LH# is 3846563 and the RH# is 3797902 both have no date. Is this correct?
I believe I do need the 2 1/2" pipes for my Corvette!
Do I need 2" or 2 1/2" clamps for my bezels?

Twan.
#44079

[William C.]

Re: Exhaust manifolds for my '65 327/300HP 4-speed

2 1/2 inch pipes were standard in '65 for all manual trans 300 hp configurations. '563 and '902 are the correct manifold castings. The outlet pipe at the rear of the muffler where it connects to the extension thru the bodywork is the same for all midyears, and I believe it is 2 inch. I think that is what you are asking about with the "bezels" question, although that word is generally applied to the decorative pieces in the rear fiberglass that the exhaust tips exteng through.