Well my Father-In Law started up my GN & said that it was smoking & started to over heat. He checked the overflow & yes it had antifreeze in it. It was also making some knocking sound. I will be going down to Michigan this month to check on the car. I'm looking into the RJC Head Gasket Kit. Does anybody have some experience with this kit? Can I re-use my ARP head bolts? What else will I need? What will I need to clean the heads off with? All advice is very helpful,