looking for disk brake conversion for 63 hard top....

Why not contact John Draxler at Thunderbird Ranch. There are folks who advert in Hemmings for example. However, John has enough experience and contacts to probably advise on what works and the level of difficulty.

Good luck

I just contacted John he has a kit for any early tbird including the 63. I have a 63 I paid 595 for the kit 40 for adjustable propotioning valve and 70 for shipping I hope this helps