It was just a suggestion, but actually not that complex in the great scheme of things. I think you will always have the why is X car in and Y out question regardless what you do.... damned if you do damned of you don't
I personally can't see the difference between a MK1 Fiesta and a MK3 Escort.... both FWD, both came fitted with an ohv engine, both had metal bumpers with plasic end caps etc etc.... MK2 Fiesta is almost identical to a MK1 bar a few cosmetic changes.....
Maybe you could make it clear what cars you cater for on the registration form regardless which way this poll goes?