currently mine has old stock MJ leafs with a long XJ 3" AAL stuck in there. before the AAL, after the AAL, empty, or heavily laden (with 2 complete engines and a trans/t-case plus my engine hoist) it pulls like a dream behind both the Durango and the Libby. other people have complained that their MJ trailer is a bit jumpy and I kinda want to attribute it to the new shocks they used as to the old worn shocks I put on mine. but I don't currently have a pair of new shocks to test that hypothesis out.