Mike Parkes drove only one race in 1967 for the Maranello Concessionaires Team, as mentioned above: Norbury Trophy Crystal Palace/29.05.1967.
First race was supposed to be Silverstone, The "W.D.& H.O.Wills" Trophy, race 2 but Mike Parkes/#21 is listed as DNA.
Four more races in 1967 were done by Richard Attwood for MC.
More information is in:
250 LM *5895* Maranello Concessionaires by Arnaud Meunier/2019/www.ambook.fr/page 154:
1965/*6167*/verde/RHD Delivered in February 1965 to Australian importer William H. Lowe on behalf of his customer David McKay.
After the buyer cancels his order, the car is exhibited at the Melbourne Motor Show in February 1965 but, with no takers, it is sent back to Ferrari.
At the beginning of 1967, Maranello Concessionaires Ltd. buys the car with an extended front made by Drogo.
In September 1967, it is sold to Englishman Paul Vestey.
If of interest I can scan the list of races/results regarding #6167 and some black/white pics from Crystal Palace.
Then I need your e-mail address please. Andreas