Leave it or Hot Rod it?

Ranchero is a really sweet ride, tough choice, but I would do what will make her the most happy. My wife likes old cars, she probably would have preferred that I not sell the '70 Dart, green is her favorite color. I wanted to make some changes to the '76 Ventura we have, but she wanted to keep it original, now she very rarely drives it, so we have decided to sell it.