99 gsxr forks interchange with what other forks?

[pumacorp]

I have a set of 99 gsxr 750 forks and was going to change them out for either busa forks or gsxr 1000 forks...Does anyone know which forks will fit in my trees???Also which fork tubes will fit in the gsxr 750 rim and caliper I already have?I already have the nice galf rotors and calipers and didnt want to lose this in the change over process....Its just the 750 valves and springs arent strong enough for the weight of the max...I know the springs are an easy change,,,but instead of changing valves,,,springs and seals it would be easier to get a whole front end...