Leaf Spring to Rear Trailing arm swap

[terrylgreenjr]

I've been exploring all different types or rear air suspension options. I don t want to cut up the rear floor of my 91 Suburban so I don't have to go that low. I've ordered the Porterbuilt 2 piece C Notch so I have a little time before it gets here. I've decided to try the trailing arm swap and put the bag in the middle of the arm on the inside of the frame rail.

Questions I have

Would the crossmember location measurements be the same as on a long bed?

I have a 2 piece driveshaft already is it the same length as a trailing arm truck?

I'm sure there will be more questions but this is a start. Any info about the swap is much appreciated