I'll scan and post a link to the brochure on the various SJ-410 models later tonight. I have been meaning to scan a bunch in, as I have around 50 or so...
The SJ-410 has a 970cc 4 cyl, a 4 speed transmission, 10% lower gear ratio in the transfer case both high and low, 3" narrow axles, and the springs sit 3" closer together.