The annual Scion Tuner Challenge gives three individual tuners $15,000 and three months to complete a build to be unveiled at SEMA, where the contestants will be judged on criteria including aesthetics, audio/visual and overall execution. For 2012, the Tuner Challenge featured Scion's first ever rear-wheel drive sports car, the 2013 Scion FR-S. First up is Chris Basselgia's "Minty FReSH" FR-S, dressed with new front and rear bumpers, side skirts and a duck bill spoiler, resting on 19-inch wheels wrapped in 225/35 Falken tires. Daniel Song's "FR-S GT" takes on the appearance of an all-out race car, finished in a carbon fiber vinyl wrap and equipped with wide bodywork designed by JONSIBAL, as well as 18-inch wheels wrapped in Toyo Proxes 4 Plus tires size 235/40 up front and 275/25 at the back. Finally, John Toca's "Carbon Stealth FR-S" provides both "show and go," featuring a FiveAD aero package with carbon fiber parts, smoked lights and 19-inch wheels in Pirelli P Zero tires size 235/35 at the front and 235/30 out back. Check out more looks and video overviews of each build below.