Dr. Diff 8 3/4 axles

Get the aftermarket axles for the screw in studs.(1 .5",2",3") then you can change length of studs as needed. NHRA,Ihra etc require that the stud must extend pass the face of the wheel by the dia of the stud. be very careful of closed end acorn nuts and long studs as the studs can bottom in the nut with out getting proper holding torque on the wheels and possibly messing up the end threads on the stud. makes for a real bad day. also make sure if using shanked lug nuts on the thick wheels that they do not extend past the rear face of the wheel but should come within a 1/8" of the back face. some companys make thru lug nuts with plastic plugs that also look nice and if you go racing the inspector will not make you pull a lug nut off to confirm stud length. I handle moser/strange/mark Williams axles if you need any help.paul