Slant Six Question

Are all slant six exhaust manifolds the same?

The only mechanical difference is in the shape of the choke pocket — everything else is cosmetic.

vm

Later ones have reinforcing ribs and some of the outlets are larger by as much as .375". All will interchange.

I think a certain(group of years) has a larger area that was heated when the heat riser was closed. I'd go to www.slantsix.org, they'd have all the details(& probably more). As said all will interchange.