Well, I sincerely take Dave's experience and comments seriously...but as mentioned the deed is already done: I have the Lizard Skin sound control product on the floor, both top side and underneath. I'll also be using undercoating on the underside for additional water/elements protection. On the top side will be strategic use of the Boom Mat, along with a thermal carpet underlayment. For the roof, I used the Lizard Skin ceramic coating, and will add Design Engineering D-Mat, which is a engineered lightweight thermal insulator advertised to reduce 65% of heat up to 325*F. I'll use it between the bows, and will use a spray adhesive to help keep it in place, although it's designed to be able to lay on the topside of the headliner. To reply to Gary's question, yes it is a spray on product, and there was a noticeable difference in the noise response of the floor right after I sprayed it on. It's kind of hard to tell what it'll be like since the glass isn't in yet, but with the extra attention I'm giving the issue it should be very quiet inside. I put what I then considered extra insulation in my '38 Sedan when I built it and have been happy I did so ever since.