8 3/4

General-Duster said

Tricky subject the 'old A-Bod' 8 3/4.
Even if you find an original A-bod 8 3/4 it has the 4 inch pcd axle shafts.
The narrowest 4 1/2 pcd axle shaft is still too wide for an A-bod unless its a Duster.
You can use a 66-67 B-Bod axle complete in a Duster as it fits real nice.
All pre 70 A-bods need a complete axle revamp to get the 4 1/2 pcd shafts...
By the time you do all the work its gonna get expensive indeed!
Just try and find a done one methinks.
If you was in the UK I could have helped you out with this.
Best wishes from Limey John

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Yeah that’s definitely not all true. First off, Barracudas, Demons and Dart Sports can all be included with the Duster. They all use the same inner and outer wheel houses and have an extra inch of outboard space compared to a Dart or Valiant.

And you can use a 65-67 B body 8 3/4 in pretty much any A-body, Dart’s and Valiants included. You just need wheels with about 1.25” more backspace than what you’d need for a SBP A-body 8 3/4. Which is a piece of cake if you’re using 17” or larger rims.

Dusters/Demons/Dart Sports and Barracudas can also easily use 68-70 B-body 8 3/4’s. Mine does.

And a complete axle revamp to upgrade to BBP brakes? New axles and brakes are not a complete axle revamp. And nothing is really different between the 8 3/4’s from ‘67 to ‘72, just the breather hole location. And a couple of brake adjuster things on the ‘67, but you’re replacing those anyway. If you need to rebuild your brakes already, you can get it done for an extra $500 or so. New BBP axles are $300 from DoctorDiff, backing plates can be had used for $100. And almost everything other than than brake bars and levers needs to be replaced on a rebuild anyway. Beats rebuilding and re-drilling SBP stuff, especially if you’re actually putting some miles on your car. And you can even sell your SBP stuff to offset the cost further.