So what is/are the part number(s) for head gaskets for a 98? I've searched the posts and it seems that there are notches in some of the earlier heads (before 2000, and some in 2000 seem to have this notch).

TIA,
Erik

 

Check out this link for starters:

http://www.sdpc2000.com/cart.asp?act...art&catid=2170

 

For 98's it's 12558809 and 12558810. That's the number on the original ones sitting in my garage and the replacements also. I got mine from Raging Motorsports (sponsor here) and the head bolts also. They're one of the few that sell them individually and actually stock them. Give 'em a call. Thumbs up service.