Rallycross

In rallycross too, the Imp performed well with Andrew Cowan or Colin Malkin behind the wheel.
And not in the least Peter Harper (sometimes Fraser Team)

The first Rallycross in England was run in 1967 at Brands Hatch. The RAC rally was cancelled because of Foot & mouth-disease. All those rally cars and no rally -- so Rallycross was invented. Peter Harper was watched to line up alongside Graham Hill in a works Lotus Cortina, Paddy Hopkirk in a works 1310cc Mini Cooper and Rauno Altonen in the same. Four laps. Harper was the first away by about two lengths. At the end the Imp won by about half the length of the track.
Imps reign supreme !

The Lynton 998 twin-cam engine was used to rallycross at Croft. It was first used December 1968, just after Christmas for 'The World of Sport' tv programme. Driven by Bernard Unett, it made a pirouette and wasn't mentioned in the results, though it was obvious the engine had the potential to win.

[...]

Roger Burn was the BTRDA Autocross Champion once (?) in the 70's. He drove a Clan.

Juhani Kynsilehto, Oulu (Northern Finland)
A kind of pioneer in the Imp's rallycross history: First Finn to drive a rallycross in a factory team.
He had been the Finnish motocross champion. In the late sixties he was employed by the Wihuri concern, the importer of Imps in Finland. No wonder this keen competitor with motocycles, rally and race cars got the privilege to drive the Imp's rallycross-specials for Chrysler U.K. in England. Then and while he had some cars visiting Finland too; one race/rally Imp by British register REG-3 was here about 1970. That one had 110 hp at some 10500rpm.   - [Kari Tossavainen, 4 Feb 2001]

Unknown Imp Calfornian driver enjoying himself. (Darcy's site)

CCC February 1970 (p. 123) - Rallycross Round up:
John Cockerill's Meadowfield Garage 998 Californian was due to appear in race trim, but acquitted itself well, with Tripple C stickers knocking seconds of its 0 - 60.

Mike Ranger

Rallypoint
At the second ever Rallypoint, staged by Castrol and Owen Org's Motor Club at Long Marston, Stratford - 1977 - Spring or Summer ?.
Photo by Dave Gray ?
Mike Ranger screamed his Californian away from spinning opposition.

Rallycross Lydden Hill - JVC 123E Photo for sale at photohistoric.com