Just purchased a 2000 GP GTP with 81,000 miles on it. I have owned a 2001 Bonniville W/SC in the past and have regreted getting rid of it ever scence. the GP was bought knowing it has a problem, It has What looks like mud around the radiator cap, and was loosing coolant. I found a cut from the belt in the overflow hose and have repaired it. Just not sure wich direction to go. After looking at alot of posts i am guessing intake gaskets. The car runs good, has some noise from the front of the S/C, sounds like a bad bearing, and a little of the rock grinding noise that is always talked about. Not sure if just the coupler will take care of that or do i need to do somthing else in addition. Thanks for your help.