so I bought all the parts to do a 5 lug conversion in my fox, used sn95 spindles and axles. I bought my first set of weld prostars and my question is whether I will need hubcentric rings or not. The hub on the spindle measures about 68mm and the center hole of the prostar measures about 78mm with the center cap in. Can anyone who uses prostars help me out? thanks guys. Also do I NEED 3" studs with a 5/16" wheel spacer?