Hi Alain,
If you're talking about the Shelby wheels with the four spokes (same as
the American Libre's) then I would say yes you could use them. My car
has the 4-spoke, 13 X 5.5" American Libre's and it uses the rear
spacers. I don't know if you "NEED" them, but without them my rear
offset would be way more than is actually needed (rims too far towards
the center of the car). I believe that the spacers on my car are actually a
little thicker than the examples Rick sells (something Gary Winblad
noticed). I think that I could even fit 13 X 7" American Libre's on my car
with the spacers. If you want or need me to measure mine, let me
know.
Chad
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