In a message dated 7/20/2005 9:18:34 AM Eastern Daylight Time, yenko117 at yahoo.com writes: > Does anyone know if there was a different shock > installed with the F-41 heavy duty suspension? Mike, Chevy did use a different shock with the F-41 on the LM. I don't know about the earlies. If you need a part number let me know. Bob Hall