hey, yeah, a ton meant 100 mph, not really a hard thing to do today, but it was a bit harder to achieve on some older bikes, some say "ton up boys" or "cafe racers" would put a song on the jukebox at one cafe and have to race to certain point and back before the song was over, there are a bunch of stories, check out
www.tonup.com and
www.the59club.org.uk to shed some light
Street fighters, right from
www.wikipedia.com, says: Street fighter is the term lent to a style of custom motorcycle which originally had fairings that have since been removed. Styling hallmarks frequently include: Double round headlights, extreme seating positions highly tilted rear ends (tails) and highly-tilted exhaust systems...
alot of them start off from sportbikes that were damaged
and Rat Bike could be made of anything