Check my post above, your front Cragars are identical to the Steelies I have now.
215/65/15 will fit, no room to spare, no need to cut fenders.
I had 15x7 with 4.5 bs on the rear with 255/60/15s. Those tires fit the 7" wheels very well.
I switched to bbp axles and now run 15x8 with 4.5 bs and 275/60/15s.
They fill the wheelwell much better, however, the bbp axle flange is farther out from the bearing by a tiny amount.
But man, those 275s look way more better.
Not sure what axles you have, sbp or bbp.
Imo Cooper Cobras are a great tire.
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