Pulled the 3rd member from the 9 inch rear of my 70 mustang grande. Don't know what the gear ratio is. Fairly certain it's stock, I have the identification plate. Can vaguely make out the numbers, should just need to have the rust removed. It takes 28 spline axles.
The diff could be damaged. I had shaking in my car at 40+ mph, but a mechanic said they've seen the issue but have never been able to identify the cause. May have just been an out of balance shaft, which is also for sale for $100, it's 54 5/8 long, the yoke is 31 spline. Driveshaft - https://olympic.craigslist.org/pts/d/seattle-1970-mustang-driveshaft-100-obo/6840883493.html
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