Any recommendations for a decent specialist somewhere between Abergavenny and Newport who could look after my 2020 Mustang? Could probably go a bit further afield if needed.
Not Ford specialists but Autotech in Caerleon and Forza GB in Caldicot both have very good reputations. To be honest any reputable garage should be able to do it, finding one is your only issue. Automotive in Cardiff are another worth looking at.