Keeping 13 inch wheels during disc conversion

Yup, '66-72 Kelsey Hayes and I believe someone makes an aftermarket kit that keeps the small bolt pattern.....Scarebird? Dr. Diff?.....seems I remember seeing one. I don't know of any 13" wheel that will fit with any disc brake setup though. Heck even some of the earlier 13" wheels wouldn't fit on 10" drum brakes, let alone disc. If you're planning to upgrade the rear end too, and you're not going to keep it close to stock looking, I'd go large bolt pattern. Many more options on rear axles, wheels, and brake changeovers.