I m selling my k5 Blazer. The body has the normal Chevy rust spots on it. Motor runs but has a knock on the top end on right side. Was told by several mechanics that it s something simple like rocker arm push rod or lifter. Everything else is in good shape. I have 2 brand new window motors to go in it just not installed yet. Newer leaf springs on the front. New heater core. New fuel pump and re...