Here's some shots of the car at Car & Driver's Supercar Challenge 2004:
The other cars in the Open Class were (1st to last):
Hennessy Venom Twin Turbo SRT-10
RSI SR Twin Turbo Viper SRT-10
MTI Z07 Corvette
Evotech Lamborghini Gallardo
RENNtech SL600
Kleemann 55K3
Superformance Brock Coupe
Mosler MT900S
The Lingenfelter 'Vette finished 2nd, behind the Hennessy Viper.
In the Sedan Class, it was a slightly different lineup. In order of 1st place to last:
Mallett Cadillac CTS-V
Vishnu Mitsubishi Lancer Evolution
(tie)Lingenfelter 427 Cadillac CTS-V & HPA Motorsports Stage II Twin Turbo Volkswagen R32
RENNtech CL55
Active Autowerke BMW M3
Hoppen/MTM Audi RS 6