To replace the rotors you have to have the wheel studs pressed out switch rotors and studs pressed back in. I would suggest you get new studs. Dorman 610-130 these are right hand tread I don't know the # for left handed if you want to stay orginal.
610-131 is the left hand thread stud part number. The problem is they are obsolete and there is none to be found new unless you are extremely lucky to locate a mom and pop type store that still have some old stock.