68' Dart
When I made the spring re-location boxes I designed them with three adjusting points. 1" lower, 1" higher and 1" to the rear. I ordered the Cal Trac springs with a 1" lower and 3/4" shorter. I moved the rear end back 1" to better center the wheels in the opening. I notched the rear spring mount so the spring shackles would clear. The car hooks up really nice. Once I get the rest of the glass, hood, bumpers(glass) etc installed, I'm sure I'll need to tweek the Cal Tracs.