dipstick

HELP!!! Maybe someone in the Chicago area can help me. I am interested in a 2001 GS430 for sale at Luxury Motors in Downer's Grove (suburb of Chicago). I am in South Carolina, and need feedback about Luxury Motors (not a Lexus dealer). Any input will be appreciated. Also, I would like a recommendation for a Lexus dealer inspection. I will eventually have to fly up to check the car out myself, but before I spend the time and money, I would like to find out what I can about the dealer and the car. Carfax is checks out OK -- private one-owner car with 6k miles. Advice, anyone? Thanks in advance.