Cam Question for a 360

1967 Plymouth Barracuda F/B Currently 318 engine, cam im not sure but the car does move; mopar conversion to electronic ignition, Edelbrock intake manifold LD4B, Holley Carb 600 cfm, Heddman comp headers, Flowmaster dual chamber exhaust with turn downs, 904 trans with transgo performance shift kit, ford nine inch rear end. The gearing is stock. Highway gearing. I think. I would like to keep the gearing the way it is. Transmission is solid. So I need a set up that would work with what I have already. Now I think that I would have to change the Intake Manifold. That LD4B is only for the 318 block/heads. And since I am upgrading to a 360 I would like to get the Air gap edelbrock intake. Any help would be greatly appreciated. Oldvart/Rumblefish things I have purchased already.
Milodon stock oil pan, widage tray w/intall kit, b&m flex plate externally balanced, high volume oil pump, arp bolts.