You could go north and talk to Joolz (Track Car Solutions) about upgrades or south and meet the Silvestone Performance guys. Both highly recommended. From my experience over the past 4 years its worth travelling that bit further to get the best result.
not to far either really to go to horizon motorsport in cradley heath very helpful and friendly and got some top guys working there phone number 01384 566660
not to far either really to go to horizon motorsport in cradley heath very helpful and friendly and got some top guys working there phone number 01384 566660