Are you thinking about a Flexalite 210's?
I put them in about two months ago. Today was the ultimate test. I sat in a parking lot (approx 130 degrees) for 34 minutes with the motor running and the A/C on. The temp guage never moved above the 1/2 way point. If this doesn't sell you, nothing will. Last summer I would have overheated if I kept the A/C going. That Viscous fan is worthless here in the Sonoran Desert. If you are thinking about it, DO IT!
:O [==] O: