They are of a can-am design, with GRP bodywork set atop a bespoke chassis meant to accommodate a variety of engines from four to eight cylinders, or rotaries.

[10] The design is of a mid-engined, rear wheel drive layout, with a tubular steel space frame chassis.

[10] The Ultima Sport used a developed version of the Mk3 bodywork, with larger headlamp openings which held three lights rather than the single units of the Mk3.

Originally introduced in 1993, it was first intended as a lower-cost example and Ultima expected buyers to opt for the Rover V8 and a Renault transaxle; customer demand, however, meant that Chevrolet small-block V8s were typically fitted instead.

The Rover V8s would be standard surplus purchases, with only a new exhaust system, would produce 230 bhp (230 PS; 170 kW).