After having trouble with "the other guy's" brackets I had bought, I contacted TMR and asked about their brackets. Superior customer service, fast shipping, and a perfect fit first try. Used them on a 79 Ford kingpin 60 with jb6 calipers, tons of room, fit my 15x14 steel wheels with 3" backspace. I tried a set of old jb7 calipers that I had laying around and they fit the axle just fine, but would require very light grinding of casting to clear my wheels. All in all, I couldn't be happier with their customer service and product.