I was only involved in the monitoring & logging. In comparison with what is available from China via eBay etc these days, design & build was a more exacting task. A decent data logger was an investment then & one can only marvel at the pscan for our cars & OBD readers in general to realise how rapidly technology has moved to a point where you can have access to data once the sole preserve of a main dealer. The bogo units available from China cost little more than the price of a couple of pints & a cigar.
As far as the engine was concerned it was never going to be a classic like the Rover (Buick) engine, it was little more than a couple of the 1500cc engines used in the Spitfire, according to some, others that the four pots were half of the V8.
Let’s hope Cobb’s can clarify as he has first hand knowledge.
M