I was checking out the shackle reverse kit at http://www.offroadunlimited.com. They state that they have a kit that fits (and I quote) "86.5 - 91 Ford F350 4WD." I wasn't aware that there was a difference between an 86 and an 86 1/2. Anyone care to shed some light on this? I just bought an 86 F350 today, and I was wondering how to tell which is which. Also, they claim "This kit maybe used to convert 1980-97 2wd to 4wd with modification and additional parts available from ORU." Wonder what additional parts would be needed for something like that.