if not i will order a set of rays standard lugs. but if i can use my existing ones and save money then i rather do that.

 

depends on the wheels you're getting. Either way, you'll need a thin-wall 21mm socket to fit in the lug holes. I've installed OEM lugs on SF Challenges before and i'm almost positive that's the wheel you're looking at.
-GP-

 

cone seat vs ball seat. short answer no. well yeah it can go one but it wont seat rite and probably wll mess up the wheel.

 

yes i plan on getting volk sf challenges. so yes or no?