Originally Posted by AKjeff
A 1 1/2" to 1 3/4" exhaust pipe reducer, with suitable radiator hose clamped on either end would work.
Cut the end off the stock radiator hose and find a 1 3/4" hose with the right bend in it for the end.
Or see if a radiator shop cad weld an aluminum reducer on it.
Boy, was I wrong about the size of the outlet, it's a 1-13/16"
I got a flex hose (I hate those, but what are you going to do?) 1-3/4" and it was still too small. So I took the shipping cap from that outlet and brought it down to the O'Reilly's and matched it up to the 1-13/16" one. Had to special order that size reduced to 1-1/2". Now to just find a joining hose piece that large.
I did call a radiator shop and they told me it would cost around $150 to put on a reducer. I'll try the exhaust piece first.