Orosco finished a close 2nd in his 2500cc. car.  He owned and raced the winning Scarab in the 1980s before selling it to Walton.

His Lotus was raced "in period"with its 2.5 liter. Coventry-Climax engine.  Few Mk.15s used engines of this size:  most were 1500cc. or 2000cc.