What should I look for to see if it truely is "fully loaded"? Thanks

 

Your just looking for all the bell's and whistles like power mirrors,windows,locks,seats and stuff like that. Go to kbb and look at what options were available for that car.

 

Assuming your looking at a car for sale look at what the bottom of the line gts came with too so howevers selling it isnt trying to jack the price upor make the car look better by advertising parts the were standard. for example the gt's came with spoiler, fog lights, im pretty sure the power locks and windows (i think)so these arent options they dont make the car worth more then anyother gt they all had them