Ok I'm shopping for a truck, preferably an 87 - 91 "V" series 4 door. Here's my question, is it safe to assume that ALL 91 model ("V" series) automatics are 4L80E's? OR could a truck like this also come with a TH400? I'm curious if the OD trans was an option or standard equipment. Since these are hard trucks to find I know I may have to travel to get one so I'm trying to avoid surprises.