Rearend ID

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jar84203

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8 1/4 or 7 1/4? How can you tell from the exterior? Thanks.
C:%5CUsers%5COwner%5CPictures%5CAlan%27s%20Pictures%5C1971%20Duster


IMG_1382.jpg
 
8 1/4" rear. It has 10 bolts holding the rear cover on and 3" axle tubes. The 7 1/4" is more of an oval shape, only has 9 cover bolts, and uses 2 1/2" axle tubes.
 
I have a 71 Duster 225 slant six with an 8 1/4? Shouldn't it be a 7 1/4?
 
My 71 duster was originally a 225 and has a 7 1/4, but I'm sure it was an option to get the 8 1/4. the pics is deff an 8 1/4.
 
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