Thanks topgunovrtx for your info, on friday I fired up my 1996 Taurus and a few blocks from home the front end disappeared in steam. Having had this experience in an early life with a different car I flipped on the fan to max and the heat to max and reached home just as thermostat guage passed 3/4. It never rose above 3/8 normally. Once the hood was up I saw coolant sprayed all over the engine and a coolant hose separated from the upper radiator bypass hose tee.
You are correct about how hard it is to identify the part. I ended up having to pull the tee (a pvc section that connects three main hoses and a fourth much smaller hose that I assume is used for a sensor) from the car and cart it around to auto parts dealers. Only a Ford dealership could give me the part number F6DZ8584BD and he priced it at $97 CAD. This part no. does not turn up in a google search and unfortunately there is no way to confirm the part numbers you gave will work for my '96. Seem's I'm stuck with Ford price markups.
One short bitch session, this pvc tee is a very bad design for a "high performance" engine. The intake is a standard male nozzle ~3 or 4mm thick over which the host is clamped but the two tee outlets are of a female variety. Here the two outlet hoses fit between a thick ~3mm outer casing and a thin less than 1mm thick nozzle that slides inside the hose to secure and clamp. It is the thin inner nozzle that failed allowing the hose to slip out. If all three connections had been of the inlet type (hose fits over thick nozzle and clamped over top of hose) this failure never would have occured. This is hose/connector 101, someone tried to get fancy rather than sticking with the tried and true. p.s. I just eyeballed the measurements above but basically it comes down to thick and sturdy vs thin and fragile.
I'll remember the silicon grease part when my new tee and hoses show up, thanks again topgunovrtx.