yeah its about 59 from wms to wms,
theyre not all posi, u have to jack up the car and check but it was an option that came on a lot of them,

i havent been able to find one yet (still searching the junk yards)

and ive never measured the leaf spring mounts so i couldnt tell you, but i figure ill jst cut them off and weld them back on where ever they need to go. its 5 on 4.5 bolt pattern but if you find one id measure it anyways