Maybe I am missing something but I can't see how it would hurt the value or desirability of the car by putting in the aftermarket system. If all the OEM components are saved, they could always be reinstalled. My car is factory air and the system needs at least as much work as yours. I am going for a Classic Auto Air system. I am storing my original components. As far as my research shows, the only mods to the car may be drilling some extra holes in the firewall. Maybe not even that. There are also adapters that make using the factory controls and vents possible.