When our lift hit's the market, we want it to be a "stage system". Therefore if you buy the 4" kit, and later want to go to bigger tires, or more lift.....Instead of having to remove your old parts and sell them used (1/3rd of new as a rule of thumb), you can add to the base kit for a fraction of the price.
That works out much better than selling your old lift for peanuts, and dropping over a grand on a new kit that only gets you a couple inches ahead.
We are currently addressing issues with cv angles wearing prematurely, and breakage due to increased load. With 30-31" tires, the cv's sem to stand up pretty well considering the extreme driveline mods. We ARE looking into a "bigger" cv, though....heh heh
