HermTheOverdriveGuy.com : Herm runs a company called ATV Manufacturing. He has a wide selection of parts ranging from overdrives to 19 spline axle components to narrow track steering components. He's also designed a very slick brake master cylinder conversion kit for flatties that uses the existing through the floor pedals. If you have an early CJ be sure to check out his site.
Rob's 4 Wheel Drive and Fabrication: Rob is a super friendly guy who specializes in 4wd vehicles. His shop is located at 5790-C Thornwood Dr. just off from Pine Avenue in Old Town Goleta and can be reached at (805) 681-1236.