Out of the Bonhams-description, July 2006:
1967 MICROPLAS MISTRAL TRIUMPH TR3/4 SPORTS SPECIAL
REGISTRATION NO. RLM 31E
CHASSIS NO. LSR.102.BH
ENGINE NO. TDD36E
..this Triumph-based special has the later, Kamm-tail Mistral bodyshell and was constructed in the mid-1960s by electrical engineer Anthony Snapper using a TR3 chassis, Austin A60 front end, TR4 engine and overdrive gearbox. Following Mr Snapper’s retirement, the car was advertised for sale and featured in Classic & Sports Car magazine (July 2001)..