Exhaust manifold gasket help please.

Hello fellow FABO members.
Question,
Does anyone have a suggestion for a better fitting gasket for my exhaust manifolds.
As noted in the pix the bottom has very little contact area thus it leaks.
The only number on this ill fitting gasket is B90460
I flipped the gasket over so you can see the contact area between the manifold and the head.
The gasket does align correctly with the bolt / stud holes.
Correct / better fitting manufacture and part number would be of great help.
Happy Mopar :)
Thanks in advance
Arron.