The longest you can find that have a fully compressed length that is still shorter than your bumpstop on bumpstop compression? (so that the shock is not bottomed out and carrying the load of the jeep instead of the bumpstop...)

Go measure, then you tell use what length shock will give 'you' the most travel/flex


The OME long travels that were designed for your lift are likely your best bet.

 

i thinking about going to a long arm set up. just trying to found the best set up