The old MarkVIII (93 I think) was incredible... (I got mine from the wrecker for $50). People thought it was too noisy, so they changed it. Anything newer is basically the same as an SN95, but the SN95 shroud will fit better. I highly recommend them... the aftermarket fans don't pull what they claim.
You'll need a 130 amp alternator... I got a brand new ford unit for about $160.
I used the
www.psm1.com variflow controller. I'm not sure if they're still available, but I probably wouldn't put out that money again. Just wire the low speed (centre prong) to your ignition (using a low-amp switch to a high-amp relay), and get the appropriate thermostat-switch for the high speed (shouldn't cost more than $30 total).
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'89.5 5L LX, hatch, Medium Canyon Red, 155K Km (No winters), 5sp, 3.08, GT interior, a/c, Alpine CD, K/N, Crane PS91, Walbro 190 LPH, March Pulleys, Mr. Gasket 180 therm (HP balanced), 3 core rad, MarkVIII fan, Variflow controller, Polygraphite front bushings, FMS-5300B springs, 6 KYB's, 73mm Calipers, Maximum Motorsport 4pt chassis brace, Western Motorsport Racing's Sub-frame connectors. Re-ringed bottom end, conv. motor mounts, melling oil pump, FMS-C50 waterpump, GT40P heads (blended, polli