electric fan conversion/heater hose question

[68isgreat]

For my 68 C10, I'm considering converting my 1990 tbi 350 to an electric fan, but my motor doesn't have a water pump heater hose inlet, and so I have the return heater hose connecting to the top of the radiator next to the battery instead. My radiator is from a late 70's square body. None of the radiator/electric fan conversion kits I see have an upper hose inlet on the right side near the battery. Does anyone know of a workaround for this? I think I read somewhere about a spacer under the thermostat with a nipple attached. Would that work in lieu of connecting to the radiator?