So driveshaft specialties suggested a 5" aluminum.
I will be contacting drive shaft shop today as the guy that knows about lifted trucks was not in yesterday

 

Nobody in canada makes driveshafts? I can rattle off 3 places near me and ive never really researched the subject.

 

I'm getting the 5" as well. supposed to be badass

 

I'm going need one on my lowered 10 rcsb aren't I?

 

We have places but I don't trust them.
The one local place I called suggested a 3.5" steel and wanted to reuse my slip yoke.
I need a 70 3/8" long driveshaf
I am ordering the 5" aluminum from drive shaft specialties today.