3rd gen Drive shaft.
If it helps i still have the stock rear end.
If you have the car itself on stands, you may be able to get the stock driveshaft in, BUT it'll bottom out when you let the car down.
Now, since I used to build driveshafts for a living, for a couple of years, I do know the slip yoke is supposed to be about 1" from bottomed when the car is parked on it's own 4 tires.



