What Are You Doing/Have You Done To Shed Weight?

What model is this ? Dart or Barracuda ? Big block or small block ? I saw a reference to dropping the bigblock but you stated you have a 904 which was never available for a bigblock , Also you stated you are running an 8 3/4 out of a 75 Imperial ... 73 was the last year for 8 3/4s so you might have a 9 1/4 . And I thought 71 was the only year for rear discs on an Imperial ... maybe up to 73 ?
It’s a ‘69 Barracuda. Original 318 2bbl replaced with a mild rebuilt ‘70 340, 904 console, 3.55 Imp rearend. You may be right that’s it’s 9 1/4, I’ll check again, but what I’ve found online indicates it’s 8 3/4 and 74-75 were the only years with rear disc. It’s an unusual design with 1 caliper leading the axle and 1 trailing - came that way from the factory.