I bought an SD1 once, it was dreadful in fact the build quality was worse than a Marina and that is saying something.
At least the Vitesse I bought was fitted with the LT77 gearbox and was a twin plenum model, this one has the god awful Borg Warner 65 fitted.......yuk !
I realise a lot of people like them, but they were a poor follow up for the P6, and the Ferrari Daytona rip off styling.........well I don't think the Italians had anything to worry about
Brian