Yep, or you can even look at going wider (225/50) on the same 14x6 wheels... I'd imagine they'd fit under the mustang fenders without any real difficulty.There are lots of tires in this size:
Hoosier R6
Hoosier A6
Hoosier Radial Wet
Toyo RA1
Kumho V710
Kumho V700
Hankook Z214
Avon Tech RA
Nitto NT01
This is one of the most common sizes in ITB and ITC competition.
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