Hello everyone,

I am pretty sure or at least I always thought fastback and coupe quarter extensions are the same. I am selling my old extensions on e-bay and somebody is asking that question. Can someone please confirm my thoughts? Thanks in advance.
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Just go to your favorite mustang catalog and see if they have the same part numbers.

 

Well, they look the same but Mustangsunlimited lists them separate so I guess there is a difference.
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They are the same for coupe/fastback/convertible for 65/66. For 67/68 there are different ones for fastback and coupe/convertible.

 

69 diff as well.