I know this topic has been visited in the past, but now those of you who have/had them for awhile probably have some thoughts about the choice. Are you glad you did it? What would you do if you were to do it over again?

I personally can’t see much benefit on a non track car, but I am partial to the shiny rings and clips that were on the muscle cars of my youth. So, what are your thoughts, and is it true it results in a 3-5 hp gain on 1.6 cars?