I test drove a 2004 Jaguar S Type yesterday (For fun.) and the single best attribute of that car was how quiet the car is. I could of purchased it but I'd rather have a daily driver that doesn't have to have a second home in a mechanic's shop plus my Elantra has given me 4 and a half years of faithful service. As I was driving back home I decided that in order to make my car feel "new" again that I'd like to do some additional things to make it more refined.
Late last year I installed a dash GPS unit in my car which I felt gave the interior a more upscale look. Now I am turning my attention to what I loved so much about the Jaguar, how quiet it was in the interior. I've heard of products such as dynomat and I'm also aware that redoing the rubber seals around the doors can help make the interior more quiet. Are there any suggestions or opinions on how I should approach this or what your opinion of this project is?