Jrlegacy23's 72 Dart Build, pro-touring style

Idaho, There is a lot of extra room. I am definitely not using the full potential I have with the minitubs. I estimated where a 10" wide wheel with 7" backspacing would be. I have around 1.5" of room to the quarter panel and about 2" to the springs. I am running a 56.5" wide rear differential from wheel mounting surfaces.
As for the front suspension, here goes a long winded answer. I really like the idea of a correctly placed rack and pinion steering (minimal bump steer) and the coilovers are just as adjustable as the torsion bars, but without taking up all of the space. Leaves more room for exhaust system, seems to be a stronger set up, it is not 40 year old metal that may or may not have been stressed and fatigued.
A lot of people will argue one way or another but I suppose both have there advantages. I am also running 2" drop spindles with the front suspension (as I believe most are with this conversion), so I am comfortable with the fact that I can get a lower stance without compromising the suspensions ability to handle without having to go to a thicker spring. Don't get me wrong, I like the torsion bar suspension system, I just prefer the coilovers more as thats what newer cars use for better handling. I guess it is all personal preference for each persons use.