Hi mate,
Yes it is just the pedal pivot bushes at the top of the pedal box and you can do them with it in the car but you need to lay in the footwell and its not a very nice job I probably would just remove the pedal box if i done mine again as I reckon it would be much easier
The bushes are easy to get hold of, I brought poly bush ones for under a tenner posted,
Heres a link:
http://www.ebay.co.uk/itm/Ford-Escort-M ... 5647f5db3f
Hope that helps