what about putting a gates power grip clamp as a sleeve on the thermostat housing,shrink it,and fit the hose over it.that'll take @least "1/16 per side that you need to make up.yes those clamps are dependable and work well.food for thought.Alright, after test fitting the hoses I'm super pleased with the upper one. It fits and looks perfect. However, the lower one has too big of an ID on the water pump side. If I trimmed the other end it would fit perfect, but there is a 1/8" gap around the thermostat housing...I think that's too much for a clamp to grab it securely. For some reason my new phone won't attach pics on here which sucks until I figure that out.
Upper hose PN: Gates 23460