First off.... Welcome to the boards.... just my .02 cents worth.
Never done anything with a Dodge torsion bar front end so take this for what its worth:
For a first build you may want to rethink your starting point just to make things a little easier. The frame is very critical to everything else falling into their proper places and making everything work together easily.... or the hard way. You may just want to find a complete non-scavenged frame to start with and use everything else of the truck you have. If you do use the Dodge you may end up fighting it all the way unless it has been together before??? Projects like this end up never getting done, because it becomes more trouble than its worth.
If you are game to take on a "BIGGER PROJECT" then look into getting a front clip off of a donor that is more readily used; S-10, A-Body, F-Body, G-body GM cars with front disc brakes.... Do a graft and youre on your way!
Good luck with whatever you decide.... its all fun