So are you talking about a 8 3/4 or a Dana, if your using a 8 3/4 then your only option is a spool and not the best IMO for street driving, if your taking it to the track then a spool is a great way to go, No Sure Grips are made in 35 Spline for the
8 3/4, if your Building a Dana then with 35 Spline, you have more option on street driving & Track driving. if you want to stick with your 8 3/4 you can buy stronger than stock axel's through Strange Engineering or even Moser, yes Big deference in the 35 Spline or even 40 for the Dana.
