Maybe those tire changing rams just in front of the rear tires could be exchanged for some double acting cylinders? Then it would be a matter of digging a hole in the sand big enough switch the head from one side to the other. It would make sense to leave the foot on the roof side because a flat won't leave the bottom of the buggy against the the ground.
As far as the suspension.....
Does anyone what material they use on the underside of the trailing arm, A-arms or between the A-arms? The stuff between the A-arms seems to stretch as the suspension moves.