Injuntom, Your Fox Campus is a 1964-65 model and used a Briggs engine. You can tell by the battery tray which is that thin metal piece that sits between the two top rails of the frame. A six volt dry cell battery was mounted in this tray and used for the head, brake, and tail lights. A polypropylene cowling that was an integral part of the seat covered the battery and looked like a gas tank. After 1965 they began using Tec. engines with lighting coils and these models did not need a battery. Your shocks and wheels are not original. If you have any specific questions there's a good chance I can answer them for you..Ogy.