ford did not just sell motorsport escort cosworths as a complete car
you could buy a trimmed shell, all the ones i saw were white
with a interior and closures etc just no running gear.
loads of preparation teams built motorsport escort cosworths into rally cars but the best way to do it was from a bare shell.
also M-sport built escort wrc cars, when malcolm wilson built
group a escorts they were called Malclom Wilson Motorsport or MWM.
Malcolm changed the name over when he got the ford contract from R.A.S