I used the allpro kit i like their long travel springs but basically marlin and allpro use the same spring disturuter but go with the all pro kit. It also comes down to how your wallet feels
but what a bout trail- gear . it seems like the same kits but just an inch smaller. 3,4,5" and it comes with an axle gusset. diff armor. knucle rebuild and wheel bearings for the same price as all pros
