Steve,
I know you said you are looking for a '07-'08 GSX-R. I don't have one of thoose but I am selling an '03 GSX-R 1000 that has many upgrades and very low miles. My '03 has never been licensed on the street, it was converted straight to a track bike. It has many mods including aftermarket fork internals, Ohlins rear shock, slipper clutch, adjustable vortex triple clamp, Yosh slip-on, vortex engine & clutch covers, Armour Bodies body work, Power Commander, Brembo radial master cylinder, plus others.
Only has 3700 miles on it.
Just thought I would give you some food for thought. Let me know if you're interested and I'll send pics and more details....
Bill