Hi mate, sorry just seen this.

The bloke I've been dealing with does a lot with Mk1 Focus RS and has this website...
http://www.sabre-tuning.co.uk/

The garage is in Upper Castle Combe, Chippenham, Wiltshire. SN14 7HB
Phone: 01249 782596 Ask for Paul.

I believe they are Dyno Dynamics Rollers, for 2 & 4wd.