During the PPI while it is up on the rack check very closely for any leaks. If it is a auto transmission have it checked throughly. Auto trans lowers the value of the car. If the car is mint pursue it. these cars are old now so if paint & interior is mint that is a bonus. Probably best to just replace the IMSB with the LN retrofit. I think it is hard to get parts for a auto trans that year so if it has auto be positive it's like new also.