I have that cam in my XH. With Pacemakers and a 3" system, fresh bottom end, reco head, everything else standard. Standard trans, convertor and rear end. It goes really well, but has a bit of lag below about 1200-1500 rpm. Pulls like a school boy after that. A convertor would make a big difference, but need money for that first.
All in all, a very nice piece, nice idle too.
If you have a rough idle, it could be something else, like an air/vacuum leak.......