Can anyone provide some sort of instructions on how to do this?
You absolutely must remove the rear end. Once you do this the car will not roll. This is why trans shops will charge a premium, the @#%)!! car will take up one of their lift bays until the trans is back in.
Other than that, if you do this on a flat level driveway (etc) it's not hard.
Disconnect all the junk on the rear axle. Admit defeat now, and go buy a new rear brake hose, that goes from the body to the axle. You won't get the old one off in one piece, I promise. In fact, you might not be able to get the nut from the steel line off without damage, so simply cut the rubber hose, stick a golf tee in the end, apply lots of penetrant to the brake line fitting, and let it soak while the trans is out!
Leave the wheels on. Remove the shocks. Cut the old brake hose. Jack the car up high, springs will fall out. Take off panhard, parking brake cable at the adjuster. Take off six? bolts at the trunnion end (trans end).
Roll the rear out the back of the car! The yoke at the front of the driveshaft will come off. You might have to get under and kick on the axle tubes (towards the rear of the car) to free it. There's a big ugly rubber trunnion joint in the front of the housing/rear of trans, be nice to that nasty thing, as far as I know they are not available. YOu can re-use the old one, if it's distorted, rotate 180 degrees, you get to wear it out twice.
Putting it back in isn't that bad, I forget how I got the yoke splines to line up, probably trans in neutral, and some medium swearing.