Big Block Manifold ID...Help Please

[tubbedamx]

Just bought a set of Big Block Manifolds, Hopefully for an A-Body.
Searched this website and a little on Moparts trying to Identify them as an A-body manifold.

Can anybody Identify these....Please. Year, Engine, Body...

Thanks in Advance
Jim

Casting Numbers are:
Passenger Side 3751074
Drivers Side 3698546

 

[demon seed]

The 3698 is 73, c body, 440 and 3751 is 73, b+c, 400/440

Terry

 

[tubbedamx]

Thanks for the help...