Manifold Questions

Ok, I am going to be installing a 360 in my 75 duster, I had 2 engines, a 318 out of a 80 something imperial, and the 360 came out of a 85 ram, has anyone ever tried to install the truck manifolds in there cars? if so what do I need to know in advanced, or should I just fit the imperial manifolds? Thanks in advanced

Bryan