Conceived as the Bohanna-Stables Diablo prototype (shown at the 1973 Olympia Racing Car Show), acquired by AC chairman Derek Hurlock and shown as the ME3000 at the 1973 London Motor Show. Development delays — including a chassis redesign after failing the 30 mph crash test — pushed first deliveries to 1979, by which time the price had risen from the projected £3,000–£4,000 to £11,300.
Mid-mounted transverse 2,994 cc Ford Essex V6, 138 bhp at 5,000 rpm, 192 lb-ft at 3,000 rpm, driving a five-speed Hewland-engineered gearbox; fibreglass body on a folded sheet-steel chassis; double-wishbone independent suspension and four-wheel disc brakes; 1,085 kg; 0–60 mph approximately 8.5 s; top speed approximately 120 mph; 40/60 front/rear weight distribution. A turbocharged variant (approximately 200 bhp) was offered — 17 turbocharged cars built at Thames Ditton.
After fewer than 80 cars Hurlock halted production in 1984 and licensed the car and AC name to AC (Scotland) plc in Hillington, Glasgow, which added approximately 30 further cars before ceasing in 1985. Published sources vary on the total: approximately 100–110 across both locations, of which approximately 70–76 were built at Thames Ditton.
Approximately 100–110 cars total makes this one of the rarest road-going ACs, with rising recognition as an ambitious British mid-engine car.