Insist on a long test drive, preferably including some 4-lane with fast-passing semi's and uneven pavement. Check the tire pressures first, against what's listed on the door post or glove box. Note any handling irregularities or tendency to white-knuckle you. Remember this is a 14-15 year-old coach. Assuming it's a Ford chassis, note how you fit in the driver's space, and how much footroom there is for your front passenger.
If it smells moldy when you first open the coach door, best IMO to use your return ticket right then.
Jim, "The other night I ate in a real family restaurant. Every table had a fight going."
'06 Tiger CX 'C Minus' on a Silverado 2500HD 4x4, 8.1 & Allison (aka 'Loafer's Glory')