Early A exhaust manifold questions

1. Will 67+ 318 or even 360 exhaust manifolds fit and work in an early A (65 valiant)??

2. What's the difference between 273 "super commando" and regular 273 exhaust manifolds?

3. Would any other car line exhaust manifolds fit an early A car (65 valiant), example, I have a pair of 318 ex. Manifolds from a 68 coronet. Would they fit the 65 valiant?

Any other facts and info on early A v8 exhaust manifolds?