Both cars are destined for one customer and are technically identical apart from their different lids and accompanying rear sections.
Like the MSO HS commission from last year, the MSO R models are based on the 675LT but use blueprinted (where components are matched with heightened precision) versions of its twin-turbocharged 3.8-litre M838TL V8 engine.
The mid-mounted unit also blows through exhaust ports that have been hand-polished and join to a titanium exhaust, helping to boost power output to 679bhp – up from 666bhp in the now-discontinued 675LT. Drive is sent rearwards through a seven-speed dual-clutch automatic gearbox.
Along with their uprated drivetrain, the MSO R models come with aggressive aerodynamic features including a twin-element rear wing, front dive planes and MSO Visual Carbonfibre Pack parts. Both cars sit on five-spoke wheels; the coupé’s are finished in satin black, while the Spider’s are gloss black.