Welcome to the site! Car looks very nice for 130k miles, especially the interior which often shows a ton of wear at that mileage/age, but this car doesn't have any sort of "SLP package" (various SLP content/packages would be optional on SS, but not offered on base Z28). I think you meant S
AP (Sport Appearance Package, meaning the ground effects, etc.)?
Car looks stock except for the wheels and exhaust. Those are definitely factory wheels, just not from that model year. But, IMO, those are much nicer than the split 5-spoke wheels that would have come stock on an '02 model. Looks good.