Air Shock Front End??

[crossland1962]

I have a 62 torsion bar truck that has bags on the rear only at this time. I know that I can change to later cross member or can plate and bag existing arms and get rid of t-bars. But my question is they make a bag/shock combo for later model t-bar vehicles that are very expensive. Why could someone not just run air shocks and remove t-bars? I am not planning on doing this just wondering why it couldn't be done??