Its a hybrid car
I used to run one, basically the old XXX transmission with the new EA3 bits, it was a great car handeling wise. I used to use a plastic chassis too, which I think is the same as the pictures.
I think the CR covered what we were trying to develop, as the BK2 transmission generated too much rear side bite, and the XXX allowed for abit more rotation, superb car at the time! However the let down of the CR is the poor material, although it is cheap in cost for spares.
It's likely to be very good now as its basically a CR but with the right materials.