A guy in my area has a TT Viper, a Heffner built car if memory serves. He's run in the 9's with it, but is currently experiencing clutch problems (he's on clutch number 6 if memory serves).

Here's a link to a thread about his TT Viper:

http://www.fbodycentral.com/forum/showthread.php?s=&threadid=18153

Here's his two current cars:

99 Twin Turbo Viper GTS
927rwhp/1067rwtq @ 17psi
9.72@147.42mph @ 12psi

98 Quicksilver Supra TT - 6 Speed
GT74 Dual BB Single Turbo
756rwhp - Traction issues on the dyno
Re-dynoing soon

LOL, not bad eh?

Best Regards, HitchHiker 05 Altima SE-R - smoke, 6-spd - Fujita CAI Best stock times: 1/4: 14.366 @ 98.99MPH - 2.366 60 ft 1/8: 9.373 @ 79.84MPH - 2.366 60 ft