I could not find the proper fittings. I am sure you can get them. I went to two parts stores and they could not even order them. I bought the double flare kit from princess auto. One of the tools fits for our size brake lines and you can do bubble and double flares. Oddlly, the 72 spider uses double flares on the bottom of the pressure switch. I bought a set of brakes lines for the later spider and then had to modify them. The flare kit worked great I think it was $35
uhh I did in fact get the fittings ( see photo above), I was able to get them at Part Source. I brought in the originals and matched them up to the metric ones they had et voila Our brake lines are bubble flare and 4.75mm. You are right that kit makes it so easy