stock wheel stud length?

[Winters98GT]

Thats the question, anybody know. I bolted up my new prostars tonight and noticed that I need a lot more stud length. I have the correct moroso studs for the front(not on yet), and the correct spacer, but it seems like even after I put the new studs on, it still wont be long enough.

 

[MyStangGT]

 

[SaleenGT2001]

i have 3" studs in the rear and they work fine

 

[Winters98GT]

thanks for the replies, wheels are already mounted