Is the original question not about fitting air con but about adding the climate control items to a car that already has air con - ie difference between climate control and simple air con? Still can't see how it would be worth it even if feasible. By the way, my 100HP's done 35,000 miles in three and a half years, including several trips to Italy with temperatures in 90s (F) or above at times - the climate control is on all the time and works quite satisfactorily, with very effective demisting - set to 19.5 (C) when the sun's shining and 20.5 when it's not.