manifold ends

[jetmech85]

So at this point are you just trying to remove the manifolds? Have you sourced new studs to go into the new manifolds? If so then cut them off if that is the easiest for you, probably what I would do also. Not sure about '78 but newer ones were a stud, spring and nut. I think at some point in the past it was just a stud and nut. The heat riser butterfly will require longer studs on the pass side. Hope this helps.