Magnum Serpentine on a '91 TBI 318? Without changing the intake?

Wouldn't you just need to switch the thermostat housing to a regular vertical hose attachment to fix this conflict?

Sounds like you are planning a non-AC swap. Is that correct? I am looking for pictures I posted once of a 91 Dakota I found in the junk yard for reference but have not found them yet.

I forget if the angled 91 Dakota thermostat housing is large or small style, but both are available in typical vertical layout.