sentences:  Other changes include interior trim in matte-metallic Octane finish, a flat-bottomed steering wheel, standard Recaro seats with microfiber suede inserts and manual adjustment, elimination of the seat-back pass through, high-density foam in place of the rigid structure of the seat back and steel mesh of the seat bottom, a 7.0 L LS7 V8 engine co-developed with Corvette Racing, racing-style cold-air induction system with large K&N air filter, standard dual mode exhaust system with larger-diameter pipes, Tremec TR-6060 6-speed manual transmission, limited-slip differential with a helical gear set, 19-inch diameter wheels with Pirelli P Zero Trofeo R 305/30ZR19 tires, Multimatic DSSV spool valve dampers, Brembo Carbon Ceramic Matrix brake discs (394 x 36 mm front and 390 x 32 mm), monoblock calipers (6-piston front, 4-piston rear), elimination of tire inflating kit (except for units sold in Rhode Island and New Hampshire), deletion of interior sound deadener and carpeting from the trunk, replacement of the standard LN4 battery with LN3 battery, replacement of the standard 3.5 mm glass with thinner 3.2 mm glass for the rear window, removal of HID headlamps and foglights and the removal of air conditioning (available as a stand-alone option).The Z/28 can accelerate from in 4 seconds and can attain a top speed of .The Z/28 won the "Motor Trend"'s 2014 Best Driver's Car Award, beating the Alfa Romeo 4C, BMW i8, BMW M4, Nissan GT-R Nismo and five other cars.