busa
I done this swap back in 2000,The only thing I think you will miss is when you twist the throttle on a busa you go forward on a GS you don,t,well it does,but like a snail.So if you can live without that need for straight line speed IMHO it's great bike and will run rings around a busa on the right roads.I certanly don't miss those £160 rear tyres ever 2k.Compared to a busa the GS is peanuts to keep on the road.Go for it.Andy