Most definitely inquire about the Opti-Spark and the water pump. Are they the originals? If so, be aware that they are parts that are prone to failure, and are expensive to replace.
If a convertible, check the rear decklid for etching of the clear coat where the top contacts the decklid. Also check the conv. top for abrasion from the control links.
Be absolutely certain that the Bose system is in proper working order, they are known for crapping out. Check all functions such as, power seats (including the lumbar funtion if equipped), windows, door locks, mirrors, headlights, A/C, everything......
What you don't find now, will cost you later. Check the doorjambs for paint damage as these cars have a tendency to sandblast themselves there. All panels should be properly alligned. Does the car sit level? Carefully inspect the weatherstripping.
As mentioned, the intake is prone to leaking so inspect that area. Take a look at the underside of the hood for abrasion from the radiator shroud on the passenger side. All frame/suspension hardware should not appear "shifted" (a ring of a different color around the bolt). Take a look at the welds that appear at the front of the car's frame - do they appear to be factory or "after the fact"? Those welds cannot be duplicated, and they are often a tell tale sign of a front end impact. Check for overspray.
Service records are a big plus if available. Try to run a CarFax if you can as well. A CarFax will not show everything, but it's worth a try.
Good luck and take your time.
