To my knowledge only one car was built with the 4.4 engine and this was registered as an Aero 8 and had an aero chassis number. Aeroman, then Mr Tony owned Aeromax No 1 which was a 4.8 and was the original Aeromax.
I did look at buying this car some time ago at that point in time it was straight but had is pointed out in the ad the car was written off by someone's son.
I think that AeroMax No: 1 must be regarded as the original Eric Sturdza car which had an Aero 8 chassis number and a 4.4L engine. As far as I am aware he still owns it.
There were then two prototypes, both on Aero 8 chassis numbers - the one on this thread which had a 4.4L engine, which was written off by someone's son, and the one owned by me (Aero 8 chassis no: 600) which had a 4.8L engine and was used to develop this engine and the auto gearbox for the Aero's. The multi-adjustable ZF development gearbox was removed when I bought it off the factory and a normal production gearbox fitted.
Subsequently this Max was owned by Mr Tony, who has since sold it on and it is still in the same hands. I can't remember who had official AeroMax chassis no: 001, but it and roughly another 100 official AeroMax's were then built with their own chassis numbers. Currently the factory have the last AeroMax built - chassis number: 000 at a price in the region of £150K or offers.
The car was formally used by CM, but has been refurbished to a new standard both inside and out, though it has been resprayed and is thus no longer in the iconic 'Liquid Mercury' paint as used on the Sturdza, and several other AeroMaxes! HTH.