1980 cadillac coupe deville suspension interchangeable with?
 

my suspension in my 1980 cadillac coupe deville is sloppy and i wanted to tighten it back up but with a little bit of a bite added. i've been doing research and i found that the shocks and springs can be interchanged from a 94-96 impala ss(b-body) but i wanted to know more about

1.sway bars (front and back)
2.bushings (something along the lines of energy suspension?)
3.anything else that might interchange between the 80-85 cadillac coupe devilles(d-body) and other gm platforms.


thanks