Really too bad you didn't have a starting weight, but alas I would guess that could be easily had. Thinking of adding some weight difference to the equation? Weight on the tires would be good, as you extended the front and left the beef back (engine/tranny/water). I would like to see the effect on that. This would filter in to when doing obstacles, weight shifting, etc. Besides, you capable of lifting any single tire just shows the difference in configuration of the center of gravity.
Adding a tube front will add weight to the front and will move the cg forward, but balance that with the weight of driver/passenger and gas so I guess it'll remain to what it's near now.
Do note, that Tracker looked pretty clean in terms of rust for a northern vehicle.....
Looks great so far.....