ive been running 33's on my truck for about a year now, and have never had a problem, or any of my other zukes for that matter with 33's and bigger, i dont think u will have an issue with them, and i dont think i have ever heard of an aftermarket HD or "arp" stud replacement for them.
a bit of rust on lug nuts is normal, i wouldn't worry about "corrosion" dont throw $$$ away for no reason.....
-Lance
ps: post a pic if you want and we will have a look.