Switzer Performance from Oberlin, Ohio uses 93 RON octane pump gas(available everywhere 93 is sold), and throws down an impressive number. 9.42@153 mph. Along with the huge pump gas number, another R1K-X ran a 8.99@165 mph. Eight second streetable cars are hard to imagine, but Switzer is delivering. Head over to their blog post for more pictures and information on the R1K-X.