umm probly not worth it, but there are many other ways to make the sh*tty blaster suspension much better.....a 03+ z400 shock or 400ex shock makes a world of difference to start. but to put a banshee suspension on would require WAY too much modding to even be worht it i think. seeing as banshees are wider, and teh swinger doesnt mount to the back of the engine like a blaster. it has its own mount. if you do try it, good luck. post pics and a "how to" would be a good mod to show off...
it def wont bolt right in, good luck, hope i helped