In case anyone is interested or for future reference the new belt is a 763mm x 10mm which gives enough clearance, the existing was a 775mm.
Next thing to do is to work out why my roadster bumper keeps coming loose even after a short run, just the near side though.
Paul
glad it's mended paul, by the way Welcome to the forum, and I just need to remind you that we like photos of cars in these parts
