Piotrsko -- That's the plan. I had the Lexus axle to put in it, but became dis-enchanted with open differentials when I spun out on black ice.
Agreed the Baja is good for development, but a reproduceable kit would need to accommodate full fenders. This design (from 1995) has an 8" beam extension and the FUV battery box is about 8" wide.
The model has a cantilevered trailing arm suspension, but practically, a polished aluminum widened sand buggy beam instead.
redpoint5 -- Stanced Previa?