A body Exhaust manifolds

I have a 65 Barracuda and was wondering if anyone has upgraded to exhaust manifolds that excepts 2 1/2" pipe.

340 manifolds will fit with Schumacher motor mounts. My friend has them on his 64 Barracuda. The only problem is that 340 manifolds are pricey now. Any particular reason you didn't like the Spitfires?