Looking for 8.25 or 8.75 rear end

73_Dart said

Both my 73 Swinger and my 74 4 Door came with 7-1/4"
The 74 also came with a 318 from factory.

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My 73 swinger did as well. But I read somewhere once that the 8-1/4" replaced the 7-1/4" sometime in the 1970's, so I figured it might be worth investigating. Sure wish I could find that link now...