A banshee axle will fit into any year blaster. The problem is, the banshee used a floating caliper and the '88-'02 blasters used a floating disc. The axle seal on the right side of the banshee carrier (or 03+ blaster carrier) is made to seal directly to the banshee (or 03+ blaster) brake hub. If you tgry to use an '88-'02 brake on a banshee axle the brake hub won't seal and mud can go right inside to the bearings.
No matter what year model blaster you have, the banshee axle will bolt in but you've got to have the brake hub and seal to match for it to work properly.