What happened if sombody just painted the cam covers that colour?
One way to tell the difference between a big port gze and a small port gze is whether or not it runs a dizzy. Small port gze came out with coil packs and crank angle scensors and somewhere along the line recieved the coated pistons.The gze with the dizzy was normally a big port and has semmiforged piston non oil squirter with 8:1 comp ratio ( lower than small port.