318 >>>360 in a 75 dart

couple of questions.

I found a running 360/727 in a 78 Chrysler C-body.

I have a 75 dart swinger with a non running 318 now so would the 904 in the dart work on the 360? Like are they both external balanced....are they balanced the same?? ( I was thinking to use the 904 in the car so I don't have to fiddle with a new driveshaft)

Also what would be better to use: The existing 318 exhaust manifolds from the 318 or the C-body 360 manifolds from the new Yorker ??

I am pretty sure everything else will be a bolt in affair but I wasn't sure about those things mentioned. If anyone has anything that may be a problem or show stopper.