Rover front may be worth a look with aftermarket 4.75:1 ratio. Axle assy can be had in about 60" width.

The difference between that and our 4.778 is about 0.6%, basically negligible (ie, on a 30 inch tire about 0.2 inches = not much more than "loading difference" or tire wear) There would be no handling issues associated with the front going marginally faster than the rear on dirt.

Looking at doing a subframe that bolts to the existing upper/lower mounts to mount the spring/shock and Panhard and using the Rover leading arms, or possibly use the existing spring rotated 90 degrees and taken down to the lower part of custom made leading arms utilising leverage for a bit more travel. Chassis end of leading arms would come from a box welded to bottom or side of the chassis.

2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"