those old 750s are really not fast.... especially if they not looked after well.
my friend has a 400 bandit and we use to pull from 80km an hour with old mazda mx6, and I use to run him.....
you guys should try taking on bikes more often.... you will be surprised.... Sx keeps up very well.
you have a 220kw sx, you will surprise most bikes, I ran a BMW GS1150 from 80km with my old setup.
If yo have suspension, try taking them through the corners, even more fun...
RAW raced a k7 (1000cc) recently in one of the highly powered cars his building and managed to stay in front of it from about 80 to 240 plus till they tapped of.
Only take small cc, like 400s and smaller from the line, higher cc's, only rolling start from 80 at least, or 100.
enjoy its fun....... he he