Okay here is my 2 cents worth.
Unless you are attempt to keep with a totally original look go with the airplane style hose clamps with the screw tightening. Buy good stainless ones.
If your looking for a oem clamp use some good permayex sealer on the part them slide the hose on and move the clamp onto position. I let it set overnight dry them add coolant. Have never had a leak.
So to review: use the screw type which are easier to tighten and loosen unless going totally oem show car. Form a Gaskets also has a brown color gasket sealer that works good too but you will have to split the hose to remove it in the future.
Hope this all helps.
