83-84 Mazda Rear End

Any one know were i can find a 83-84 Mazda rear or maybe even have one. Im looking to put 18'' escalade rims on my B but there not going to clear in the rear, and theres none of them up here there all scraped I live in the rust belt if your vehicle dont rust out in 4 years its a classic haha

i will have one out of a 74 really quick.. but shipping that thing might kill ya

One located in east texas if your interetsted.