mini tub pictures

Just insert a length of allthread through the stock front hanger brackets (bolted to stock location on the car) and the new relocation brackets. That will locate the rear assuming you're using the same length springs. You can adjust the hole up or down depending on if you want to raise to lower the rear ride height. Double check the pinion angle before striking an arc on the spring perches.

And what do you mean by "truck door brackets?"