sound deadening

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hi
RS body is due in a few months, has anyone had decent results with sound deadening/insulating the interior of the Ultima, now's the time if I'm going to do it. Dynamat Superlite is the product that I've been looking at, any info welcomed.
Regards Tim

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Thanks for the information, engine is 4.8l twin turbo ls, steel block, mufflers are Borla on home built exhaust, hadn’t considered cabin heat, I imagine that most of the heat and noise is at the rear bulkhead from the engine. I’ve gone round tapping panels and they all have a bit of a drum to them, worst are the metal seat wells, I suppose by using Dynamat on the interior it will provide some thermal insulation with the downside being a weight penalty. Maybe some acoustic foam on top of the Dynomat for the floor and thicker between the roll bar on the rear bulkhead is the way to go, planning on doing some trips to Europe so comfort is more of a priority than weight for me.
Regards Tim

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Festa_94 said:

I’ve done mine, likes been said I know it’s never going to be refined place but I wanted to make it as nice as I could. I’ve done the floor and cabin sides with Dynamat and thermal insulation. Carpeted the cabin too.

Do you think it has reduced the noise and vibration in the cabin?
What thermal insulation did you use? And has it improved the heat transfer?

Interested to hear if it’s worth doing or if I’m wasting my time.
Thanks for the reply
Tim