The passenger side seat belt retractor lever broke on my 1987 Monte Carlo. What does it take to replace these? Is it worth it to make them work as they should? Is there a way to update these to a modern seatbelt that does not use these retractors? I also need to replace a few trim pieces on the seatbelts so if replacement is an option now is the time to do it. If it is better to fix it then all the trim will be done now too, This car is a driver, not a show car.