Well you know what i recomend, and my fan is wired into the a/c relay, so when the a/c is on the fan will be on, i know how hot it gets in south tx, so i recomend a 180 stat, 3 core radiator, and the BM fan, they make one especially for the 5.0, i know of guys running flex fans also, but they probaly drag a little more than a clutch setup, good luck on your decision.
In traffic with my a/c on, with underdrive pullies, my guage barely goes past the 2nd mark, stays under half way, the fan will draw more off you charging system, so if you have a stereo system, and pullies, you might think about upgrading your alternator, i have a stock autozone one, and it undercharges, but not enough to cause problems, yet
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Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer
Race weight: 3,120
E.t-13.57 with 26x10.50's e.t. streets. 1.88 60'
mph- 99.92 mph