Very Welcome, hope this works out for you !!
They're pretty close to you?
Had a customer with a Suburban w/ Quadra-steer, wanted to do same thing. Contacted Strutmasters, they don't make a kit for it.
They told him if he took it to them for a week, they would use his truck for R&D so they could make and sell kits for the Quadra-steer trucks.
He would get his free (and installed). He decided to sell Suburban,they were very good to deal with.