Don't want to start certain peddlers of rumours off on another wild goose chase John.
Why not? MMC rumours are fun! Lets see what the mistery model could be;

a) A three wheeler with a 4.8 V8 (to solve the alledged vibration problems)
b) An Aero SS with a S&S engine (because of the shortage of V8's)
c) A Roadster Freelander SUV (to get sump clearance with the 3.7 V6)
d) ?
Cheers J