Biss Bros had I think 6 Chinese Six units think they were Foden but not sure, they were crap to steer and only lasted a few weeks and were sent back to the factory on the North Circular Road, the second steer was taken out and the chassis had a bit cut out to shorten it, were then a good motor.
We used to send 1 back to the factory at a time and had a unit on loan which had a longer engine installed as it had the rad grill sticking out about a foot, only drove it once and never got the bloody thing into top gear, it was that fast you could cruise at 60+ without using top, with 6500 gal of petrol on your back it frightened the crap out of me.
Balloonie.