A body non 7.25 rear end

motorpirate said
We do. It's still in the car.

I asked because I would like to squeeze a bit more mpg from my 73 318 four door valiant driver.
If any traders are out there I have a 8.75 housing and axles, from a 67 B body, 1969 dart grill with signals and bezels, one extra set of signals.