I personally have a buell X1 lightning its a 2000.
As far as mods
K&N filter, velocity and blowby kit
K&N power commander 3 tuner
Bosch Perforamnce wideband o2 sensor
Penske Rear shock with 6 way adjustable remote resivoir
Brake pads
Corbin seat
1 up adn 4 down shifter
Bar end mirrors (godsend)
Polished swingarm, subframe, adn rear sets
There is alot more id like to do, but the funds keep it down. Most of it is gettign it repainted silver, and some carbon fiber stuff. Eventually, but ill prolly sell it in japan in the next year or so and buy a brand new firebolt.