Headers for a 400?

[Pollitt91]

I have a 73 catalina. 400. The drivers side exhaust manifold has been missing both the front and rear fasteners for what looks like years ( not broken in heads just gone) it has developed quite the exhaust leak from manifolds warping. The passenger side is also missing the front bolt but it's not as bad. I though this would be a perfect time to install headers. The previous owner had new exhaust installed from the manifolds back. My issue is, while I know there are dozens of options for headers on a 400. None that I can find specifically say they will fit a Catalina. I was wondering if anyone had any input. Thanks.

[Frosty]

A lot of header manufacturers have either retired or discontinued the 70s era large car headers from their catalogs due to a lack of demand. They aren't as possible as the F-body and A-body cars these days. You either need to call them and see if they will make you a set or you need to run a set of factory original or reproduction exhaust manifolds.

A company called Ram Air Restoration makes reproduction Ram Air/HO exhaust manifolds, essentially factory headers.

https://www.ramairrestoration.com/