As long as it's the same as a '90 like I think it is, take the stock upper hose, cut it in the middle (at the bend in the middle) and take that to a hardware store and get a 45* copper pipe elbow that fits on the inside (I'm not home or I'd measure, I think it's 1" or 1.25" pipe) and two hose clamps, put the two halves on the engine and on the radiator and trim the middle to fit with the elbow. You don't need a bulge or anything for it to hold, I've been running this setup for 10 years without issue and am using an old hose...
On the bottom, get a lower hose for a '86 Thunderbird Turbocoupe, fits reasonably, I've had to trim the radiator end before.
I used to know which radiators fit best as the lower radiator hose goes in at a couple different angles, I forgot and the last radiator I bought was a '93 manual trans Explorer radiator from Napa, the lower hose points straight back at the steering box, the previous I had the lower hose angled down a bit. It's tempting to go with the thick explorer auto tow package with A/C radiator but it's kinda cramped with a 2.3L, there's only like 3/4" between the fan clutch and radiator. I had interference but it took all my horsepower and my axle wrap to cause the issue... that's why I went with the thinner manual trans radiator.
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