Maybe make something like this? Just a quick illustration...
[Linked Image]
The 1/4" pipes are radiator feed inlets and outlets.
The 1/2" pipes are for the shower
The unit can be about 12" long

Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
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