Anyone have an EFE valve that they are trying to get rid of? Have an 84 Cutlass Supreme, installed a new exhaust system custom made (by me) that sort of resembles the factory exhaust. However, the EFE valve was seized up and I threw it away years ago when I was going to do an engine swap. It has a 307 (VIN Y) and I need the valve to complete the exhaust. The original part number was 5233475. I am still running all of the smog equipment and the CCC system. If anyone has one or knows where to find one, I would appreciate the help.