Also, I thought the spring relocation only moved the springs in 3" per side. Your numbers show an 8" difference between the spring perch centers. Am I missing something?
The 3" relocation kit can be installed for a 4" inboard relocate, it depends where you place the boxes in the notch side to side. Alot of people only notch the inside of the rail and use the outer rail skin as a "fence/stop/locator for the box.
