1985 for the 3 door until 1988 when the saph took over this soon when 4wd and the first international rally for an esc cos was sept 1990 on the talivera (spl) rally in spain driven by mia bardolet, he won aswell
ford changed from the escort WRC to the focus in 1998
I'm sure the 500 was raced from 1987 to 89 before the regs changed in 1990 to 2.0 n/asp engines
hope this helps
steve