I have a 1992 F-250 Custom (actually an F-257) with a 5.8 L and C-6 tranmission. I want to replace the C-6 with either an E4OD or a 5-speed manual to improve my fuel economy. Does anyone out there have detailed information about the swap process, the parts needed to complete it and any additional details or suggestions to make the swap go smoothly. Thanks in advance. I am new to the site, but I like what I see.