I would try a cam more like
http://www.hughesengines.com/partDetail.asp?partID=10057&eTypeID=10
For the head I would go with the EDDY magnum with the magnum manifold. I like the vertical manifold bolts. Lastly the Magnum serpentine belt is WAY better then any v-belt. Less drag, less headaches. V-belt conversion on a magnum is a pain. IMHO.