Also, what may of may not be a clue, the far lane Dart Sport has the lettering centered above the front wheel opening, like the B/Altered car #3263 in this photo.
I noticed that same thing last night. Did they use stencils for the small lettering back then.??? Maybe just 2 different stencils.
Also what is the "Blue Logo" on the qtr.panel in that photo.? Must have been before "Spring Road Auto Sales" joined up. Looks like it says MPC