ADVICE/HELP on 1/2 inch wheel studs

1...what 1/2 x 3" studs should I use?
2...is there anyone out there that does the machining that can assure accurate concentricity?
3...does anyone sell rear hub assemblies WITHOUT the parking brake hardware (I don't use a parking brake) and can build them with the 1/2" studs?
I would like to give my business to a forum member if practical.


