E body Hemi Exhaust Manifolds and Motor Mounts-Difference?

Why are the E body or later Hemi Exhaust manifolds and motor mounts different?

I thought the only difference in K frame was the degree of steering box angle.

Is it due to engine bay dimensions and where are the differences?

Thanks

Hemi Exhaust manifolds are not unique to body style, drivers side engine mount is E/B body unique but only in shape, location is the same.

Scott,

I had an issue when I first put my engine in the 69 Charger.
I had Shumacher mounts for the 69. The drivers engine bracket I had put the engine in a bind.
I then changed it to a 69 bracket and the motor fit perfect!

....also, can I use my Year One Repop (66 style) B Exhaust manifolds on a 71 Barracuda clone?

Thanks

Any factory Hemi exhast manifolds fit any year or body style 66-71 Hemi car exactly the same. Reproductions=same scenario however, some repros dont fit very well on any Hemi.

When talking motor mounts Im talking factory parts, nothing else.