Well said Reverend Wilkinson!!
I also owned 2 of these fine machines, though i dont think any had the distinctive 22b chassis code
First one was 990cc, top speed of 55 due to it enormous tyres on it, and crossed the River Clyde without the use of a bridge or ferry.
Second one was a 1300 hard top model with a top speed of 90 and about 3 foot of play in the steering box.
I know of one in Dumfries with an Alfa Romeo Twin Cam engine in it and can top 130, only brave men need apply
Grant