Need th400 mod ideas and some other 400 ?\'s answered Ok, I am getting my TH400 rebuilt and this is what I was planning to do. Also, what other things do I need to tend to besides the kickdown switch; I originally had a 700r4? B&M overhaul kit, adjustable vacuum modulator, deep aluminum pan, and a art carr reverse gate shifter. What about a manual valve body kit? I would like to get a lower first and second gear, but do not want to spend the cash on it. Anything else??? Thanks, Pete.