In 2012, Ford revived the Boss 302 nameplate. The Ford Mustang GT’s 5.0-liter Coyote V8 engine was enhanced and referred to within Ford’s development teams as the Road Runner.
Upgrades include a forged rotating assembly, CNC ported heads, revised camshafts and a high flow “runners in the box” intake taken from the 302R racecar. It produces 450 PS (444 hp; 331 kW) at 7400 rpm – 32 hp (24 kW) over the standard GT’s 412 hp (418 PS; 307 kW). t is rated at 380 lb⋅ft (515 N⋅m) at 4500 rpm and comes with a 6-speed MT-82 manual transmission. A solid rear axle with 3.73:1 differential uses carbon fiber plates in its limited slip differential or an optional Torsen differential.
The quad exhaust system made up of two standard Mustang GT outlets and two side pipes that exit on either side of the rear crossover. The side pipes send the exhaust through metal “Attenuation” discs to create an extra growling exhaust sound. The discs are removable and include a spacer plate sized to match aftermarket exhaust dump valves. The Boss 302 takes the Mustang GT’s suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar.
The aero package (i.e. spoilers, splitters, etc.) is almost entirely copied from the Boss 302R race car. The 19-inch black-alloy racing wheels are 9-inches wide up front and 9.5-inches out back and come fitted with 255/40-19 (front) and 285/35-19 (rear) Pirelli P-Zero tires.
The Boss 302 Laguna Seca edition is a further upgraded version of the Boss 302. Additions include Recaro sport seats, a Torsen limited-slip rear differential (both optional on the standard Boss 302), revised suspension tuning with unique spring and damper rates, and a larger rear stabilizer. The Laguna Seca model loses its rear seats, which are replaced by a cross-car X-brace to increase structural rigidity approximately 10%. It rides on 19×9-inch front (255/40-19) and 19×10 inch rear (285/35-19) light-weight alloy wheels with R-compound ultra high-performance tires. Ford Racing front brake ducts help cool the brakes. A more aggressive front splitter and a larger rear spoiler increase downforce for high speed track use. Ford produced 750 Laguna Seca versions for 2012 and 2013 years (750 total)
The limited-edition Laguna Seca is designed to maintain street-legality while bridging the gap between the Boss 302 and the track-only Boss 302R and 302S