RE: Horton fan
I installed this fan in my truck in 5/01. Not a difficult job. The mechanics are straghtforward and the electrics are not difficult. All parts are clearly marked and the instructions are good. The only difficulty I had was finding a wrench that fits the stock fan drive nut. I believe I used a large Crescent and a piece of pipe for leverage. Beyond that, no problem.
Since install, the only problem I had was severing the electrical line from the senders to the fan clutch. My problems was that I hadn't made sure that ALL the slack wa taken out of the wiring. Wires got sucked into the fan and sliced them cleanly. Take care.
Other than that, no problems were encountered.
Give it a try!
Good luck.