If you want the best budget get the CJ exhaust valve installed and leave the smaller intake, have them do a throat cut when they machine for the valves since this'll open up the area behind the valve. The early intake ports gain volume on the bottom of the port which isn't necessarily the best as the top of the port is what you'd want to be sure matched. in the exhaust take the gasket and put it up to the port, see how it matches and compare that to your header flange and the exhaust manifold face of the head, if they line up leave them alone if the header is raised and the gasket is too match the top of the gasket if it'll leave enough gasket material for sealing and when you feel up the port a couple of inches you'll feel some lumps and those should be cleaned out too