They are old WP shocks which you can no longer get parts for - according to Duncan I had the last two seal kits for them and we had issues with other components in the shock that couldn't be replaced. Not to mention there is nothing special inside so our customer ended up purchasing 450R stock shocks that we built a triple rate kit for.
I'll have to search, but I believe we finally threw away the seal kits. you can PM me if you want and ill search through our drawers
www.JetSuspension.com
the nations first stock Long Travel Kit on the market.