Like 68 said, it’s not really a necessity but nice to have. I’ve owned my 69 for over 50 years now and have never ordered mine. I believe I know how the car was ordered some I wouldn’t expect any surprises. My wife has offered a few times to buy as a gift and I told her it would be a waste. Now I did order the one on the 67 I bought a couple of years ago Because I may want to sell it at some point and i wanted to confirm that it was originally an HO car. And also to make sure all the original options were still on the car. Any can have been changed or gone missing after 50 years of multiple owners.