292 exhaust manifold Help!

[Bluegrain64]

Hello all, new to the forum and I have a question regarding my 64 c30.
I'm trying to locate a exhaust manifold for my 292 and have read mixed things on fitment.
I looked at one from summit but it says it will not fit a 64!?
I've located a used one from a 68 292 but am hesitant to get it without knowing it will fit for sure.
Common sense would tell me most inline 6s would interchange.
So I guess my question is: will any year 292 manifold work or is there something special with the 64?
Thanks!
Oh here's the truck I got it at a auction for 600 bucks!