I was thinking on doing the D20, Klune set up myself. I figure with the kind of wheeling I do here in KY and surrounding states, the klune will prolly be enough without having to 4:1 the t-case. Plus I think I would be way too low if both were engaged, and don't think I'll have a need for that.
I plan on doing an AX-15 swap down the road a little, and will probably just do all of this at once. I'm surprised I haven't seen any discussion at all on inertia rings in this forum, maybe just haven't found them yet. That is another mod I got planned for the near future.
Matt