Reese Universal Base Rails - Questions on install

[SoCalAngler]

Hello all--

Getting ready to install the Reese RP30035 universal base rails in my 1992 Ford F350. I had few questions....

1. Has anyone attempted to install with air bags? My air bag top bracket appears to be right in the spot where the rear bracket would install.

2. Directions call for the rear end of rear rail to be installed at 32 1/2" from rear of truck bed. However, it gives no measurement for front rail. Why? Instructions do not mention to install hitch and take measurements from there, at least instructions were not clear on this point.

3. Did you remove wheels and put rear axle on jack stands for this install? Instructions state to raise rear axle and support with jack stands but makes no point about removing rear wheels.

4. Any advice, tips or recommendations on this install?

Thanks!