I wouldn't overthink it, 2 inches is 2 inches unless the shocks are on a steep angle. (Your rear shocks might qualify) If they are on a steep angle just pull out the ol' pythagorean theorem and you should be able to get close enough. Or, just buy shocks that are specific to your lift.
Lou
I hope I'm wrong but I assume they are mandating the low rolling resistance or "Eco" tires. I have had 2 sets of those from 2 different manufacturers. The first set got so many punctures that I threw them away long before they were worn out. The same thing is about to happen to the second set...
Keep it coming! You're looking good here. Nice collection of tools, most of us have a hodgepodge. Just for giggles, I checked my toolbox, it's a 1978.
Lou Manglass
I have a small set of rotary bins which serves the same purpose as yours. Gets filled with "stuff" that doesn't have a place, then emptied out as I put things away.
Lou