When the OE Fan Clutch went bad on my son's 78 Toyota Pickup last year, I decided to try an electric fan instead. I bought a "made in Italy" el-cheapo fan for $35 and a thermostatic switch kit for $24. I wanted to keep the cost as low as possible to see how it worked the first time. It made a noticeable difference in acceleration and reduction in noise!! It has worked well so far although the fan could use a bit more muscle as it seems to run a good bit when the truck is in traffic. The engine is modified with 10-1 push, cam, weber carb and home made headers. Lessons I have learned,,, It's DEFINETLY worth the effort to use one. Do NOT scrimp on the size and power of the fan. Better to be a little too big than too small. If I was installing one on a hot rod or expensive rig I would opt for the twin fan unit. That way if one fails you still have a backup. It might be a pretty good job to install one if the radiator is a sung fit with A/C, be sure to allow enough time to do it. Bruce Hevner -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 267.6.6 - Release Date: 6/8/2005