Maybe it's not possible to make significant changes to classics and keep costs under control with a low volume manufacturer like MMC.
Look at the entry level cost of a 4/4 compared with the cost of a plus 8 which I believe uses aero mechanicals.
Plus 8 is a ridiculous circa £90k!
Pushing classic prices any higher would progressively reduce the pool of potential owners like a pyramid model.
Look at how many British low volume sport car manufacturers have tried and failed to sell expensive cars.
Pass me the grease gun!
You know it makes sense! 
