the rst is an old beast now, just remove it, and as long as the brakes and the hendbrake warnng lights works the car will pass.
my current car has no abs, it passed as the MOT tester said to me the test is so basic(light coming on at static etc) it would be hard to fail the car. if somone fails it mate there not following the guidelines for the year of your car but just following modern test standards that do not apply to a 17+ year old car
i may be talking sh!t its just wot i've been told