What kind of exhaust manifolds would work on a 67 coupe with a 351W? `67 289 manifolds?

 

I think that the ports are opened up more on actual 351 manifolds than their289/302 counterparts. Again, I think that the 289/302 manifolds will bolt on and seal, but will pose some real exhaust restrictions for the 351.

I think I may have a set of 351 manifolds from a 70 LTD... don't know if they would work in the Mustang though...

I might be FOS though...