Another image of the present situation
Thank you for the tip about Katech's straight
neck thermostat housing. I think this would provide the
bottom hose with less interference at the frame horn.
Welding aluminum bungs would work. I think they
perhaps have a larger OD than the width of the WP casting
at the top tube, but it would be a simple matter to fill in
with weld around the back side.
BTW - Your suggestion led me to think about whether Earl's
90º fittings with tube sections could be welded in place.
Either modify something like this or build (bend & flare)
from scratch and then weld into place.
Wait a minute. Instead of bungs or tubing, why not just weld
aluminum AN fittings to the pump?? If someone took a 45º
cut off the heater hose boss so the fittings could angle upward,
so much the better. Earl's offers 'Male Weld Fittings - AN Thread'
from -4 to -24.
Another idea (that I've just discarded) was to use rectangular
bar stock to make a block that bolts onto the heater hose boss.
The block would create a 90º change in direction with inlets on
one face that intersect with tapped outlets on an adjoining face.
It would bolt to the water pump (after removing the OEM tubes)
with a gasket or o-rings for sealing.
Welding bungs or tubes with fittings are all probably simpler
Thanks again for the help !!