@Crazy68Dart. Thanks! So a couple things, on the depth - 30 ft is adequate but my original intention was 40ft, I was limited by local codes to not have the building be in front of the front setback which is the house front, and a well behind the garage/house that required a 25' setback - so not happy but is what it is. At some point I may see about a new well or inquire about city water tap in which would free me up to expand this building with a 24x30 addition incorporating the back door for access to it.
On the back door - since I couldn't put the building back further I figured I could use the old driveway behind to store other project cars, get yard equipment access like you suggest, and future planning since I have another 2 acres of heavily wooded property
On the trusses - they are standard trusses, which I think now in hindsight was a mistake, I now would have preferred to have attic trusses, not for a room as it's not tall enough to stand in but could have been awesome storage space. Also I would have done one more scissor truss wider than they put in only because I wanted a bit more width for the lift.
You're Dart is simply Awesome!! One of my project cars is a 72 Dart GT I hope to renovate into a restored as someone had already set it up for street drag