Just bought the bike and have big plans over the winter for mods but have to deal with the brakes first. I have GSXR 750 L1 with Brembos as standard and the difference between to two bikes in terms of breaking feel has to be closed. I know the busa is never going to stop as quick as the much lighter out and out sports bike. I just need to be able to use the brakes with two fingers instead of my whole had!!!!!!
I think you will be quite pleased with the brembo conversion. I did a 65mm Brembo conversion on my Gen1 and I have 2 finger braking capability. Of course I would recommend SS brake lines, HH pads, and a Brembo MC. That's the setup I'm running and its night and day from the stock setup I had.