I was trying to figure out what power disc brakes came on the 76 comets... are they the granada ones?? its been awhile since I have looked at my calipers, doesn't the Granada have a tab and one bolt that hold the caliper to the bracket? In the end, I'm looking at shedding some weight and thought about the Willwood setup.. just know that their kits only seem to work on early drum and disc spindles..