I put longer wheel studs on the back when I had the axles out.... I was really suprised when my acorn nuts still worked. Do they just require the studs to show or do they actually require them to be 3"?
They do not have to be 3" studs. The rule book states the stud must be long enough to engage the threaded hex portion of the nut by at least as much as the diameter of the stud. In other words a 1/2" stud must thread at least a half inch into the hex portion of the nut. Generally not an issue with steel wheels but check your fronts.