Well from the past, unless things have changed.
There are only 2 reasonable options, the vette or Jag rearend.
A buddy of mine found a Jag reaerend in a junk yard and had it shortened to fit in an S-10.
The whole frame on the truck was custom, so that was easy to the point of building the frame around the rearend.
Either one you choose, unless they have changed in the last 4 years, the rear ends get mounted to the cars at the center. This means that you would have to build the rear section of the frame. This would be a lot harder in a car than it was on a truck with no bed on it, espcially since you can raise the bed floor easier than the floor pan of a car.