RE: kool klamp?
Kool Klamps are easy to make using soft copper tube. Did it many times. Simply take a piece of soft copper tube of the appropriate outside diameter and length, slightly flatten it, slip in two or three lengths of solder side by side and flatten completely until the solder stops you. Wrap the tube around the cylinder head to get the correct length with some extra for bolt tabs, melt out the solder, flatten the ends completely and drill to give bolt tabs, drill for water entrance and exit tubes and solder in the tubes. You have a kool klamp. $10 for a Kool Klamp !!!!!!!! Not in my shop.