I think this might work
I have a short arm rough county 4" lift. It is alright but I am hooked and want more. While trying to fix the death wobble I ordered a set of adjustable upper control arms from Rustys. I want to change my setup to a long arm kit. I really like IRO kit, but I have already spent money on the uppers. So I am thinking about buying the long arm lowers from Rustys off road to save money. Where it gets tricky is IRO has mount for the long arm lowers for 100. Where as Rustys are incorporated with the skid plate and is 370. So I want to buy the lowers to match my uppers from Rustys but buy the IRO mounting kit. Had anyone done this before?