i dont know, that super coupe sounded hella mean, sounded like it was pushin lots of boost through that SC, or had an upgraded SC most likely, i know a guy here with one that ran a 15.1@4500ft elevation with a bigger MAF, shift kit, bigger(or smaller) pulley on the SC for more boost, an intercooler kit for the SC and something else, and it was no where near that fast, neither can you hear his SC like that one, even now that he has more mods you cant hear the SC.
that guy with the coupe also coulda had an old one that needed bearing oiled the older factory s/c needed alot of matinance the bearing would go out on em lots of recalls. my dad had alot of em come in cause people never took care of em. but who knows the mighta had a kenne bell on it or somethin but man i didnt think he's beat the RX-7 that thing sounded mean
yea, the RX-7 probably did at least a low-mid 12 if not a high 11 with the way it sounded, sounded like it had an upgraded turbo, so the SC was not playin