Axle Studsss

You might not even need larger size splines, just fresh ones. It depends on what stripped, the studs or the hub.
But I am one of those that has tack welded studs on the back side. On an original four lug Girling front disc for an English Ford, converted to large pattern mopar.. Pulled the disc hat, bolted a wheel to it without a tire, and zapped away.