Gritineye,
Thank you for taking the time to give such a comprehensive reply. The L10 does seem to have a lot to commend it. I know of two older Meadows to diesel conversions in 20t Constructors, one a Gardner 180 LXB giving a cruising speed of 25-27 mph plus that gorgeous exhaust note and the other, a Leyland 680 Powerplus, which being slightly higher revving, gives 30-32 mph. Both
engines are very reliable with a good spares situation.
As far as I know there is one complete Meadows petrol engined 20t Constructor still around with possibly one other in bits. Although I fully appreciate why people do these conversions I'd like to think that some of these petrol engined Cons/Explorers may be able to stay intact until some cheaper, microbe based, petrol substitute becomes available in the future. I'll never understand why unlimited petrol/diesel is not prescribed free of charge to all HMV owners through the National Health Service like the free methadone scheme that enables others to get stoned all day at our expense.
N.O.S. What engine is in your MoS Constructor ?