If you are new to this, keep in mind that the A Body 8 3/4 will all have small bolt pattern unless someone up graded the axles. You car is more then likely large bolt pattern and you need to be aware of the differences. The A Body 8 3/4 will bolt right in your car but your wheels may not bolt up.
You may want to look for a b Body 8 3/4 with large bolt pattern and move spring perches in to A Body width. I have put several B Body 8 3/4 in Dusters as they have enough wheel opening you can do it very easy. Some A body cars you can not put B Body 8 3/4 in because of wheel openings.