Reg # work like this on the pre-production cars
 

Single carb 2000;s where JXC101D, 102D, etc. 2000TC were 201, 202, etc.V8 cars 801, 802, etc.

Steering & Suspension car was 809D

In early 1969 809D was loaded to Peter Brownings Competition Dept at Abington (MG) to try it out at a rallycross car with Geoff Mabbs driving it, but it wasn't a big success. IN June Rob Lyall took 808D to a autocross (in the dirt) after William Martin-Hurst asked him to  to see if he could beat his sons Rover V8 powered Escort. The rain was heavy that day and the Rover couldn't accomplish the task (my opinion is the power to weight ratio of the P6B vs the v8 Escort  did it in).  808D later went to Bill Shaw racing and converted into a race car, and later 806D was also made into a race car with a 4.4L Rover v8 that my dad had help create! This car led the 1970 Marathon by 3-laps before rear propshaft vibration sidelined it at Nurburgring. I rode in this car to the San Francisco Motor Show down the Bayshore freeway from dads office in Brisbane to Brookes Hall with one of dads dealer plates on the back!!