yup, sleepers are FUN! When In my growing up years (driving say 70-74) our town (MAYBE had almost 1000 people in it) had the following vehicles.

'57 Ranchero that would out run MOST other cars around.

a '57 chev that would pop the front wheels upon demand.

a '68 Duster that was a sleeper
a '68 superbee that was well, a superbee!

a '68 or maybe '69 Goat that was almost as fast as the Ranchero

There was a couple others as well that would do pretty well on a good day. Man did we have fun on sunday afternoons!