There is one here for a start, I have a 1971 4/4 which I have owned since 1980 and use regularly.
Mine is the red one at Bicester earlier this year
Are those split-rims?
Yes they are Compmotive split rims, when I first had the car it had steel wheels. One of the rears failed during a sprint at Goodwood, the wheel came off the car leaving 4 neat "washers" under the wheel nuts, close inspection of the other wheels revealed hairline cracks in similar positions hence the change of wheels.