Driver's side Cooling Mod
Cooling mod for 1996-2004 Mustang GTs
AKA Crack-pipe method
Supposedly drilling the top of the intake manifold is more effective, too bad.
Normal cut/trim and drill, then apply a liberal amount copper gasket maker.
Finally got some pics while I had the transmission out again.
Top hose routing uses 3/4" hose with a 3/4 brass 90* elbow, Mcmaster part# 91355k56 Brass Barbed Hose Fitting, 90 Degree Elbow For 3/4" Hose Id into a CXRacing 1.5" OD Aluminum Joiner Vacuum Pipe 4" Length Radiator (the Engrish is strong). I ran it as low as possible to keep it under the thermostat housing to reduce the chance of bubbles in the hose.

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