From the Dodge Talk Forum, these specs were published:
488 CID V-10 all aluminum Viper engine
6sp Borg Warner manual gearbox
lowered 4 inches from stock
revalved shock absorbers
heavier antisway bars
"BIG" 17 inch aluminum Viper GTS road wheels (i love it how they say BIG 17 inch wheels LOL)
275/60-HR17 Comp T/A HR4 BFGoodrich tires
