alternator
Just go with an OEM replacement. Likely the cheapest and will work just fine. If you plan to add lots of accessories, such as light bars/winch/powerful stereo you might consider requesting the heavyduty alt that comes standard on towing package models. Think it's like 130amps instead of the regular 90.
http://www.mralternator.com/alternators/ford.html Got the 200A alt, Kinda pricy but it works great had it for about a year now and it looks great with black powder coat


