im building a project 2006 mustang GT and im having some trouble. were putting 20 inch rims on this thing and were using wheel spacers that are a littel less then 1/2 inch. i need extended wheel studs and no one can give me a answer. i think the factory ones are 3/8 of an inch

 

WhenI changed mine, I just took one out , walked into my favorite parts place, layed it on the counter and said, "I need 16 of these... only longer."