Anyone out there know where to find a brake pressure differential valve for my 68 Shelby? I would like to stay original but..........? I think I have found a replacement but it would be a universal for 67-70 Mustangs.

 

My first thought is to call Glazier's Mustang Barn. They do lots of restos and may either have or be able to get one for you.

If they can't, PM me and I'll send you to someone else who might have something for you.