I bought my '87 GN about a year ago and the motor had a rod knock. I knew this already and had a new motor built. It has Champion Irons, PT-52, PTE Front Mount, Delphi 50's inj., Accufab 65mm TB, Poston almost stock cam, Poston Headers, Poston 93 chip for the 50's inj, Pat's 10" 3200 L/U...