On the web site there is a fitment scale for which Quickjackusa to use
it tells you the spread range then you can see if you can use the jacks between the wheels or across the car sideways,
On top of this you can buy or make extenders for longer cars and even get suv high blocks to lift higher
As Gordon says they came in an original 3500 Then in 3500xl and 5000 etc etc
here is the fitting link