SpdKilz Z06 TT vs. O-Ace 996 TT (Video) 1 discussions SpdKilz 548 RWHP Twin-Turbo Corvette Z06 [Custom CM Racing Turbo Kit, Twin GT35R Turbos, Modified TI Exhaust, AFR 205cc Head, Comp Cam] vs. O-Ace's 520+ AWHP Porsche 911 Turbo [Protomotive K24/18G Hyb.. Tags: spdkilz o-ace racingflix protomotive corvette z06 porsche 911 996 TT turbo