the car is how old? and the engine has done how many k's?
dont get a rolla expecting it to rev happy when you thrash it, most of the rollas people pick up are grandma or wrecker spec so the engines are usually fairly dirty, poorly loked after etc.
do youself a favour and get some carby cleaner 1st. check the points, plugs, dizzy. if the carby is tryin to suck air through oil your not goin to get far. and if there no spark then theres no revs.
give the car a decent once over, clean it up and you'll be laughing. FYI i used to drift a 4k ke70 in the dry.
-dan