I did this last year and replaced them with AC 41-993. This is the new version of AC 41-932 which is no longer produced, I guess. Not cheap, but I bought mine off e-bay for about $45 total for the 8. AC41-932 is what it says in the manual but when looking them up it's now 41-993. 350 Mag MPI Tow Sports engine, 2002.