I'm putting this up since several members have also been inspired by Agile to attempt a ttb conversion. My van is a '96 e350 xl with the 460 engine. The dana 50 is from a 97 f250. The front end will need a full rebuild, but that will wait until I'm certain I can mock up bracketry I like.
In researching I stumbled across Ramsey's build of an equal length ttb for his bronco (Raquel). That gave me a starting place for how to go about engineering this whole thing. So I salvaged my old ladder rack for some square tubing and found some free stock rims on craigslist.
Thus it begins: wheels welded so that mounting surfaces are 69.25" apart. Perhaps my first mistake?
I know I will make mistakes and redo things, I'm putting this post up so others can criticize and guide, and hopefully provide answers when I get stuck.
If anyone cares to chime in on:
Distance between spring centers on axle?
Thoughts on cut and turn vs drop brackets for 3-4 inch lift?
"Resting" angle at center ujoint?
Radius arms vs j arms, either option will be longer than stock?