Stu, if your looking for a better clutch, i had a sach's clutch fitted at JBS. The guys there are really helpful and the clutch is brilliant..... my Sport 130 one started to slip badly, i can now use all of my remap
Not sure what the going rate for the clutch is know.... you'll find JBS in the SCN sponsor list
and another mod you might need and is def worthwhile is the replacement of the front wishbone rear bushes from the standard 130 sport 'holey' versions to the solid cupra versions...... made a noticable difference to the ride and handling... the JBS guys can fit these as well.
HAve fun..... its a great little car the 130.