rearend abody

[64DartGTinAZ]

That car would have most likely came with a 3.23 ratio

Not with the A904 - they got the 2.76 - 3 speeds got the 3.23 - I think you could get a couple other ratios in the suregrip version (3.55 and?)

 

[my5thmopar]

Unless you know how to properly set up a gear set (pinion depth and drag, backlash, gear mesh pattern and the like) there is no "swapping out gears". in any rear end. You will need some special tools, equipment,parts, and know how.

Totally agree. This whole proposition sounds like a hassle for a /6 car. My2cents.

PS. Meaning if/and when that 7 1/4 hooks up, something is going to break. So have fun spinning tires until then.