Our stillborn Pontiac G8 ST is South Africa's Chevrolet Ute SS, and one tuner's cranked the SuperUte's supercharged V8 to 535 hp. It's sexier than that South African chick I dated, and maybe even crazier. [...]
Source:
jalopnik Tuning
https://www.tuning-links.com/news_1048_The+%2491K%2C+535+HP+El+Camino+We%26%23039%3Bll+Never+Get+%5BTuner+Cars%5D.html