In a word
The site was initially created to be a meeting place for all of us who are into what could be dubbed a Classic Ford with a get out there and use them mentality, this 'generally' means, RWD in production before 1980 and whilst we acknowledge you car is indeed old, it is not the type of car the site was created to cater for,
We do not mean to offend anyone by trying to exclude cars, everyone is welcome, but if you do have a Sierra or a FWD Escort or a more modern looking Fiesta etc, then there are clubs on the net that specialise in this sort of car, Alcoholics Anonymous, Everyford, and Turbosport have a diverse membership.