An option for you may be find someone who upgraded and try their caps on your shocks. I know most inter change with little to no mods as these caps have a very short threaded section. I've been running the oring pistons and the ZRS caps for about a month or so working with Mitch personally trying develop a few more setup options with both of these items. Awesome guy, absolutely the only person who ever took the front end off my buggy while I was marshaling!!! Funny times! Truly a unique individual