Nope.
I put 5.5 on mine & never changed the drive shafts.
When I did SOA on my 89, I didn't change the shaft. Driving down the highway the first time at 60mph hit a gentle riser, rear lifted and the DS dropped out of the transfer case. Blew up my rear axle internals.
At that point I had a custom shaft built at a local shop that usually builds shafts for drag racers. Exact length based on my measurements, high angle yoke, massive tube, new u joints, fully balanced, and I was $125 out the door.