I need to add 1/4" wheel spacers on the back of my '03 GT since the tires are rubbing the inside wheel well but when I add them the lugs aren't long enough! Does anyone know what the stock length is so that I can get some 1/4" longer?
Call MM, Summit or Jegs and buy ARPs - they'll tell you which ones you need. You'll have to cut them to length yourself (I did this myself after mounting my 17X9.5 rims with Cobra brakes (on the front) and found the rim spokes hit the calipers. I added MM 1/2" spacers and ARP studs as noted above...
Let me know if you need any more info...I do have the part # for these studs (and I think they are just a generic length 3" stud - I bought them from MM as well, but Summit or Jegs also carry them...you can save a little with Moroso studs, but ARP seems to be the standard and they are zinc coated as well.