Your'e all over the place!
Not just any hub will work on any spindle. What spindles do you have, and what hubs do you want to use?
If'n your'e using Porsche 944, 951, 911, etc... on VW standard, or CB dropped spindles then a search of this site will yield multiple topics containing info you need.
If'n your'e using Superbeetle stuff, then again, a search is in order. The info's all here somewhere.
Now, if'n your'e gonna use something other than P-car stuff, or direct aftermarket upgrades that are intended to work on a Bug, the info may get a little cloudy.