I will have a pair of good calipers as soon as I get around to doing a conversion will be a month or so though if you can wait.
Hi Robbie the part is wrong just tried to fit it and it won't mine as it's 1971 what year is you dad's car ? The bolt size on mine is 19 mm and the spacing is 3 inches on the calipers vw spares is 2 1/4 for early type 3