I have a 2000 that I had to replace the head on. in doing research I found what I thought was that the 2000 was the bad head. The exhaust ports are slightly smaller leading it to overheat and crack. at least that was how I understood it. in fact I thought I had read of many guys swapping that 2000 head for a 1998 head because of that. in fact I call that 2000 head Sir Popsalot!