y-coke

I have 94 warrior that I want to replace airbags. The air bags on the unit are mounted on top of the spring in front of the the axle. I have seen some mounted on top of the axle. Which is better? Can you still get replacement bags for the original. I think they are 3Ts. If I go with load lifters 5000 should I get the ones with the jonce stopper or the ones without. That's the questions for now. Thanks to anyone responding to these questions.