No longer available from dzk007: Please contact Underdog Performance.
These are available in many configurations for ALL 3.0L/4.0L SOHC V6 Rangers, Aerostars, WindStar, Explorers, B-Series, Mustangs, Mountaineers, etc.
Back in 1999, I purchased an ASP pulley for my 3.0L, as this was a great mod for my 1970 VW Beetle, I have been hooked on it ever since.
Besides the 3.0L UDP, the latest members of the family are the 4.0L SOHC Crank and WP underdrive pullies; Idler stock size pulley and the overdrive Alternator pulley. As soon as they are available, I will be getting the matching (Red) Power Steering and ribbed tensioner pullies.
This is truely a great first mod. Reasonably easy to install, at least 8HP at the wheels and a nice fuel savings to boot.