AC 428 Frua Coupe
The Frua is built on an AC Cobra 427 Mark III race-bred coil springs chassis extended by 6 inches (150 mm). Chassis were built at the AC plant in England then shipped to Frua's workshop in Italy where the body was fitted and then sent back to England to have the power train and trim added. The cost was huge and the cars could not be sold at a competitive price.
The AC Frua was never fully developed because AC Cars lacked the financial means. The car's main drawback, common to similarly engined big-block U.S. muscle cars of the period, is a tendency of the huge V-8's heat to bleed into the cabin. This design flaw can be overcome by using modern insulation on the firewall and under the floor.
Chassis construction was similar to most Italian supercars of that era, with square and rectangular tubing connecting the steel body to the frame. Though the 4 inch (100 mm) tubular chassis allowed both coupé and convertible versions to be immensely rigid, the design was intricate and prone to rust. The bonnets & boot lids were fabricated from aluminum.
This car was auctioned off by RM Auctions in May of 2010 at the Grimaldi Forum, Monaco.
345 bhp, 428 cu. in. Ford V8 engine with Carter AFB carburetor, three-speed C6 automatic transmission with Salisbury Hypoid limited slip “Power Lok” differential, four-wheel independent suspension with coil springs, four-wheel Girling disc brakes. Wheelbase: 2,440 mm (96")
Sources: RM Auctions; Wikipedia, 2012