Has anyone used those fuel fragrance products that summit carries? I have sidepipes on my 76 stingray, and I can smell the exhaust in my car, even though there is no leaks. You don't really smell it too much once in, but when you get in, you can smell it in the interior and such. These products supposedly will make your exhaust smell like cottoncandy, cherries, etc.. I don't know how they would work, can't see them working, but have seen stranger things work. If anyone has used these, would love to here if they work or not.