I Just got a yamaha parts cross reference softwear. and it says that the blaster axles are divided up into 2 sets of years that will interchange.
1989 -2002 will interchange and 2003-2005 will (this means bolt right up) no where does it say any banshee axles will fit "bolt right up"
as far as will they fit with modification, I cant say, Ive never tried.