there have been many changes over time....for suspension upgrades there are several too - shocks, rear ends wiht newest cars now BDR not ford, add on heavier rear sway bar (Olthoff supplied ) etc. for a recap of what has happened since your car was built, see :
http://performanceunlimited.com/supe.../features.html
many owners of older cars have made alot of the upgrades. many have not - to each their own . the old ones are great cars, the new ones are great cars - take your pic and pay your price. in your case, decide what is important to your use of the car for any upgrades you think are dollar wise if budget conscious. bill