UPDATE!
I'm getting CLOSE to having a fully road worthy car! I finished modifying the passenger floor for the new buckets, sealed all the seams and cut new insulation for the floor.
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If you want something
lightweight and is a proven
thermal and acoustic insulator? Look into
3M Thinsulate.
I've used it in several commercial and retail products as both a thermal and noise insulator and it works great.
So when looking for a lightweight alternative, it was the natural choice.
I got 4 yards of 60" 3M® Thinsulate UDS Insulation @ $9/ linear yard.
There's many different varieties of Thinsulate but I think the UDS 157 gram offered the best R-value/mass/thickness
I put in on the Firewall and behind the Headliner too. I ran out of material but would have liked to lay it behind the rear seat as well. I still might order another yard or two for that.
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