I would stay with the cam in it, mill the heads a few CC smaller than the 906s and let it eat. With aluminum heads and tight quench it will be fine on 93 or so octane. If you need more later than send the converter out for a little more stall. With the much better flowing heads you will need to bump up the shift point but you shouldn't lose much if any down low. 50# off the front will help the 60 FT.