You found me out!
As you can see I had been doing the same math you are. The '82 cylinders put out a lot of force.
I've settled on finding a QL cylinder, just haven't moved forward on this project. Since my 1450 is both right hand lift control and right hand direction control I want to split them up so I can operate both at once. My plan is to move the lift controls to the left side and add the 3 spool valve, or add foot controls, leave the right side lift and add the new valve. I'm mocking up the foot controls now to see if I like them, after that this project will come around again.
I would love to have room inside the frame for a 2.5"x5" cylinder.....means I could keep the skin on my knuckles.
Bill