Mine has crap seals and a diesel. I wear earplugs for the 30 min drive each way to work. Tape where the windshield meets the header under the caps "visor" made a noticeable difference. Worth making sure that area is sealed up good. I could feel air literally blasting in when sticking my hand up there against the cap before on the highway. I'm hopefully going to be starting the insulation/deadener/seals thing soon.. I expect some good improvements but physics and reality are at times quite inflexible...