QUOTE(partwerks @ Sep 6 2014, 06:54 AM)
Are there any other choices that might be comparable to lizard skin, or sound deadener, for putting in the cab, and trunks?
Lizard skin is super easy to apply. I sprayed it in the cab on the firewall.
If you want to go cheap and effective, you can use "Ice Mat" from a roofing supply store. It is a sticky, thick, rubber-ish membrane. It can be applied like dynamat. It is slightly less dense and will need to be thicker (more layers).
Lizard skin is still easier since it sprays on. It's water based and will need time to dry.
You could also use bed liner spray. It will take out some sound resonance but will also need to be thinker than dynomat.