Thanks Stan. The photo's are from last winters rebuild. I am experience a little leak around the large "O" ring that seals the pump to the steel housing. So I am wondering if I may have gotten the wrong kit, where the "O" ring was just a little off. Or damaged the "O" ring or the case is a little out of round. Anyway I need to order a new kit.

I guess I don't see what you mean by the two flat area bolt pads. On photo #1 , I see 3 flat areas or possibly 4 areas for bolts Only one of these is used in mounting the pump to the lower bracket. The others are probably for truck applications in 66. That is the one with the bolt in it. On photo #1 there are studs that go though 2 of the holes and are used to secure the housing to the pump. Is this the 2 flat areas they are talking about. The 3rd hole is for the valve that the pressure hole goes to.

Thanks for the help; but I am still confused.