I have 8600gvw, and also a 98 z71. both have 3:73 rear, trying to fit front carrier with control arms, if necessary, knuckles and all, into 98 z71 k1500. both trucks are c/k style. rear is bad in the z71. chassis bad in the 99 2500. but great drivetrain. I want to use the heavy rear end, but would like to match the 8 lug wheels. could I also possibly just change the bearings and axle shafts? or knuckles and shafts? or are the control arms required also? simple chassis mod perhaps? I look forward to your input.