Step in height

So I'm looking at buying a taco and fulfilling a long time dream. I've had a spinal cord injury though and to get into my vehicles I throw my feet in and then lift myself into the seat. Taking the wheelchair apart and tossing it in the backseat.

I'm looking at a DC and am thinking about picking up something slightly modified. I think I'm in the right place here to gather some information....

Can someone let me know the step in height of a stock trd?

Also I'm considering a truck that has a 3" lift and 33" meats so any idea on how much higher that would be?

Thanks in advance