I just ordered this
(http://www.dccontrol.com/pwmlvfitinstfl.jpg)
I gotta find a fan now, I'm going to look for a 3.8 taurus fan w/ this fk-35 controler. Alot of peeps on the corral have this setup and seem happy with it so I'm gonna give it a try..
Here's the site http://www.dccontrol.com
I've got dual hayden fans on my 84 2.3t it has a water cooled turbo and a R134a conversion. I haven't had a problem. The haydens are very high flow.