Yes i have the lovely task of rebuilding the top end on my 1991 suzuki rm 80. i bought it off a buddy of mine for 50$ and it needs a new piston kit and apparently a sleeve? Heres my question is the 1991 rm80 sleeve nikasil? how would i go aboutss checking if it is. i rebuilt my 1992 rm80 but it didnt have any scoring. i want to bore out the 1991 rm80 cylinder but some are saying i cant if its nikasil plated. if it is nikasil plated i have 2 options of having it resleeved or replated which both cost about the same. so can i bore it out? and how can i tell if its nikasil plated?