'68 383 barracuda fastback - what to look for?

Check to see if he,s changed out the torsion bars for bigger ones.I,d go over the car with a taped up magnet also(checking for bondo)Also check how well he,s done the underhood wiring and any added electrical.If it was a 318 car,it might have a 7 1/4 in it?I,m sure others will chime in with more to check.good luck.