318\a904 swap in 65 barracuda

#1 just to put the engine in the car you need : engine brackets and rubber mounts because /6 are different . #2 you need a v-8 radiator and hoses because /6 are smaller . #3 . Next is a-body left side exhaust manifold , to get around steering . #4 . throttle cable and brackets . that isn't all but others have covered it pretty well . It's not a very difficult swap but it does take some planning . Good luck !