Antique my AR**
In the right hands it would see off many of todays rally cars. Just look at some of the stage times when they mix the historics up with the modern stuff. The leading cars in the Cat 3 historics are well into the top ten against the evo's and scoobies in the modern classes.
They aren't half pricy now though
historics as in rallye cars of old, cars such as the Porsche 911, the Cooper S (proper ones) and the Escorts, the Gp B cars fall into this category loosly but historics normally refer to cars driven in anger up to 1971 or so.
As VM says, many of these well sorted 'old' cars can keep up with some of the modern stuff when times are looked at, with modern tyres and brakes, the Escort can be just as competitive today on some circuits than they were in the early 70's.
Historics come in three catogories these days, Catogary 1 is up to end of 67, Cat 68 to 74 (I think) Cat 3, 75 to 81. This rules out Gp B cars deliberatly. Apologies if the dates are slightly wrong but i haven't got my blue book to hand.
The Works Escorts like this one were not banned for being too fast on stage events, just overtaken by the group B stuff. They were and still are banned on Road events though. Road rally regs are deliberatly written to stop people using them.