[Shotimes] OT Question for the drag racers

[Robert Bruce]

This is way off topic, but I am curious about a drag racing class known as C/altered.  Apparently this class is rather old & maybe
not used anymore.  Any info would be appreciated.  What kind of cars?  How much modifications were allowed.  What would be the
typical speed?  Is/Was this class limited by weight? ET? Horsepower?  TIA

Bob Bruce
92 w/ a mod or two 
http://www.cardomain.com/ride/810875