Nice job Kevin. Lots of folks use two engine stands as there basic structure and add mounting for the particular vehicle. Or they copy that theme. Two engine stands give you an automatic 2000 lb to 4000 lb capacity. This takes half of the guess work out of the calculation.
For a cab, you can borrow bathroom scales and put one on each corner. Then the total calculation has no guesses. No safety factor.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn