lug height: .912
track width/length: 15x121
go to studboy traction and they provide specs for your sled.
1998 Ski Doo Application Chart Perfomance / Aggressive
number of studs are dependent on riding style. more agressive riding, more studs. less agressive (trail riding), the less studs. use their appliaction chart for your ideal set up.
if you add studs, you'll need new carbides on your skis to ofset the added "push" from the studs. these are also indicated in the charts.