Where to buy ?
 

Round port headers for a 62 Cat..

First gen bird might fit!Tom

considering how much headers are now in general maybe find a fab shop that can make them for you.

Where is the steering box located? In front of the spindle or behind? Also, in relation to the front control arm bushing where does #1 spark plug sit? Stick shift or automatic?
1st gen Firebird has the steering behind the spindle for reference

First gen bird long branch fit 61-64 big car.Tom

I have a new set of factory cast iron manifolds with used oil filter adapters for either bird or big car $2k plus shipping.
Located in N CA.

I am using first generation FB round port Doug’s on my ‘63 but they are not a bolt in deal. I moved the motor back an inch and to the passenger side a 1/2” and still may need a small dent in one tube to clear the pitman arm as it turns.
Getting a set fabbed is very pricey, at least around here.

Mad Dog still making them? , hes on Facebook mostly now i think.

https://maddogheaders.net/pontiac-headers

Round-port long-branch manifolds work, but are more expensive than custom headers.
 

We've got a set or R.A.R.E. round-port long-branch manifolds with the larger (2 1/2") collectors.

It's the only 2 1/2" collector set that I've ever seen 'in the wild'.

We had a pair of factory RAII manifolds several years ago that we sold for $2500.

We'd sell our oversize R.A.R.E. manifolds for $3k for the pair.

They're like new, but have been run minimally.

Thanks for the replies. I know of a 62 Cat for sale "roller", been a race car most of it's life, almost no rust.
But at 81 yo. 2 back surgery's, arthritis, and parkinson's , I ain't as good as i once was !
Trying to talk my kids to get er dun. We'll see.
OGR

Mark WAS making them at his home garage but someone on FB siad he stoppped.

Mad Dogs are THE best fitting header, shame the templates won't get used.