to get rid of the Z spokes you'd have to use an earler IT175 hub as these are the only 2 IT's with the chain on the same side as the brake, the YZ100/125 J-K's rear hub was normal spoke too but the YZ's brake hub was a floating one so would need some mods to fit.
*i have a compete IT175 rear wheel/brake, axle and spacers that would do, if he's interested send me a pm