The banshee axle will go in no problem.Your blaster rear hubs need to be swapped to the new axle.Thats all there is to it.makes it 1 inch wider on each side.
I keep hearing about putting in the banshee axle in older blasters. I have a 91 Blaster and got an axle from a 99 banshee. The axle seals dont have the same diameter and the disc mounting area is different. What do you do about that?