Thanks 76fordbronco for loaning me your mounts for this trip.
I also wanted to share some other info.........
Corey gave me the name of an outfit (DiamondRax
http://www.diamondrax.com/bulldog-heavy ... lamps.html ) who makes the rain gutter mounts for these old Confer racks. They are expensive but very nice. I called the guy explaining my lack of planning and he told me he had them in stock and would air freight them at my expense if desired. But he went on to suggest that I might be better served to check with his Colorado based competitor for quicker / less expensive delivery. Now that is some customer service !
The outfit he recommended is called gamividiti.com They make a copy of the original Confer raingutter mount. They have them in stock but their customer service isn't even in the same realm. You can only contact them by email, no kidding..........no phone number published...........none offered in their response.
Anyway, I will be buying some of those awesome Bulldog clamps from DiamondRax.
1977 Sport, 351w OBDII EFI motor, 4R70W auto, 4:88 gears, ARB lockers, 3.5" suspension, 33" tires.