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The basic floor pan on th PV is essentially the same on a 444, and a 544. There is a small "ramp", or plate on a 544, where the longitudinal seat cross member meets the door sill. The PV444s seem to have a gas pedal which is attached to the floor, while the later ones are of a "hanging" type. I think a set of insulation could be made to accomodate all PVs, with some written instructions/suggestions to address any differences. The sections under the rear seats, and the vertical bulkhead back of the seat should also be included (IMHO). The area under the dashboard, as well as in front of the shifter, on the firewall would kill a lot of noise.
I've been haunting yard sales for the closed cell foam sleeping/camping mats. They cut easily with a fresh single edged razor blade, and I've been glueing them up with contact cement. Carpet, of the highest quality I can afford, or locate, goes in over the mats. I've read a lot of comments to the effect that the glue will give way under a lot of heat, or vibration, but it's been two years, and everything seems to still be in place. My Duett is a more complicated, long term restoration project with the floor boards being replaced, primered and painted. For this reason I decided to use a plastic membrane type of roofing material as sound deadening. It is asphalt based, which gives me some concern about melting, smell, outgassing, or just plain coming unglued. I have been using Henry's PLASTIC based roofing compound to adhere the strips to the underside of the vehicle. As I said before, we'll see. My vehicle can be used as a "test bed", and I'll post if anything unusual occurs. My rationale is that the OEM stuff from the factory is also asphalt based, and it lasted for a lot longer that I'll ever have the vehicle. I bought some official car type sound deadening material, and I'll be hornswoggled if I can see any difference between the two types. Suggestions?
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