I have one of these MasterFlow MF-1089 Diabloww twin compressors. They are sold under several brand names. But if you search the jeep forums you'll find lots of discussions about these and the ARB. Mine is not as fast as an ARB twin, but at 1/4 the price of the arb twin, I can live with the extra 2 minutes per tire.

https://www.amazon.com/gp/product/B000L9D8LI/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1