Assuming that we are talking about K series Gixer Thou. (K1 thru K7) Then YES they will fit. They are 1 inch longer and have more bracing. That means they weigh more too.
No, not just bolt on and go, get the rear spacer from the gsxr wheel and install rear wheel with that spacer and remove te stock one that's on the Busa, then mill .125 off the rear brake caliper hanger so it tightens to the wheel.. as for the front you'll need the gsxr 1000 rotors too, as well as spacers from the gsxr for them to fit a Busa.
it is a gsxr technically its a gsx-r1300 just bigger and longer with a bigger motor and beefier suspension
the top speed of a 2001 suzuki gsxr 1000 is 186 mph
160hp
Yes but its not worth the work
suzuki gsxr 1000
loads
.030
suzuki gsxr 1000 phantom
IT'S A 530
About 185 m.p.h.
If you have a stock fuel pump on your GSXR 1000 K8 your bike will NOT have a fuel filter.