Who\'s done rear 14 Bolt FF disc brakes? Who has done the calipers with parking brake set up? How did you work the cable? Does it really hold the truck or was the stock set up better? Who has needed a residual valve at the rear brakes? Anyone have to change their proportioning valve? Any other odd things you had to do that wasn't expected? I'm trying to figure out what all I'll need to do / expect when I install my rear discs. Any input is appreciated. Thanks in advance. Eric M.