My 87 cab has been sagging for the past year and now I am finally going to fix it. Just ordered all my parts off and should be here within the week. Has anybody done this job? I am basically replacing everything on the left side of the cab. Floor pan, support channel, cab mount bracket, inner and outer cab corner and rockers. Also kick panel in cab too. Thankfully brother is a body guy! I know I have to jack the cab up where would be a good place to reference too? Bottom of door, truck bed, or could make gap a lot smaller between door and fender. I plan to pull door and fender off when i start this job.really getting excited to get this. The cab is so bad it rides on the shift linkage and if I hit a bump it will shift out of gear. By the way I am brand new to this forum so looking forward to talking to y'all. I will be posting pictures tomorrow so show the damage. Plan on steering this project within the next month so be cool to keep pictures on here to show progress.