Did your rotors have the ribs in between the original studs on the back side. All the C10 5s5 rotors I have seen have those ribs on the back side. It seems like those ribs would pose a problem with drilling a second bolt pattern in between the original.
Quote:
Originally Posted by kieth
I just drilled the 5 x 4-3/4" pattern into new 91 burb rotors (cost 17.00 each) installed new studs and away she went. cost $50.00 ...
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