On my 33 I bought a length of 45mm stainless tube and two 180 degree silicon bends in 45mm (1-3/4"). I cut the bends into two suitable bends per side and used the stainless tube in between.
I tack welded the thermostats to the lower end of the tubing.
It made a neat installation in the absence of a specific hose.
*actually the stainless is on my 41pu the 33 has normal steel tubing.
If you look for my crusty flatty drive video you can see them clearly.
