Matt at Lifes recommended Steve's (Tyred 'n Exhausted) Ltd to me. They are on Wright Street, Southport PR9 0LT (01704 531777). I had 5 Kumhos fitted in July last year (with tubes). They fit all the local exotica from MGBs to Ferraris and I found them to be extremely knowledgeable. They have all the gear to manufacture exhausts too.

1986 Plus 4, Fiat 2L TC stage II tuned 4-seater
Assistant Passenger/Map Reader/Mechanic