I am assuming Nick that Morgan are simply plugging into the BMW spares supply to get the V8 engines in which case they are likely to be available for some time. After all, BMW need to supply replace engines for BMW cars for some time after they stop selling the cars.
Barring a radical leap in combustion efficiency of the sort seen in F1, CO2 output relates directly to power output. Getting cars below the magic 200 is as much as function of tuning just for the test as anything else. Carefully chosen gearbox ratios and the use of anything up to 9 speeds. Small 4 cylinder engines with reduced pumping losses helped by turbos also brings an improvement.
Morgan have a wide field to play. After all, they use Ford as well as BMW so it could be any configuration when the day comes except perhaps a n/a v8
