This ignition set is from my 1968 firebird 400 engine. It will work on all Pontiac 326 to 455 cid engines. the distributer is M.S.D.8563.This is a complete ignition set with distributor, cap, wires, harnesses, coil, and box. I went to fuel injection and can no longer use them. My Firebird is a show car only used for shows and meetings. The car ran smooth and powerful when I removed the system.