you should use 14mm studs,press ins are best. then a ball seat nut. try machine 7 or here
http://www.mistertee.co.uk/index.htmlyou might need tubes depending how the "strip" that seals between the two halfs is.
be aware those fronts will not fit discs unless you use a BIG spacer to push the wheel away from the caliper. also if you have drums,normal spindles and a narrow beam they are going to look silly,too narow. they look good on a stock width beam with drums etc
those rears look deep dish,there are a few different offsets in 6 inch centerlines....bug buggy etc