Yes, mine is a double-joint shaft. I posted the following in the thread you linked to.
Quote:
I plan on drilling a hole into (but not through) the splined end of the factory steering column. I will then install the Borgeson shaft, thread a tap into the setscrew hole, and then tap the newly drilled hole so a longer setscrew can engage both the Borgeson and Dodge parts. I'll buy a longer setscrew if I need to. See the pic below if you're confused. This will keep the u-joint from ever sliding off. The setscrew will experience minimal torsional loads, mostly single-shear stress.
Here's my blueprint:
