Sound Deadening Materials for Noise Reduction from Second Skin
Luxury Liner Pro 18 sq feet ($80)
Damplifier 4-8 sq feet depending on if you do the doors ($16-32)
Overkill Foam 9 sq feet if you want to do the doors ($15) -- I have not done this part yet so 9 Sqft may not be enough, so u may want to but extra. It's light at like 0.16 lb Sqft.
Shipping cost me 29.00, but I ordered about double everything listed here.
And if you are in AZ, you'll pay tax.
Other items you may want, which I also purchased
High Temp Spray Adhesive 1 can ($18)
Wooden Handle Roller (helps to smooth the Damplifier which is pretty stiff) $15
I'm also toying with adding vibration dampening areas (Damplifier) to the fiberglass body panels, but I don't know how much sound is really transmitted through fiberglass by resonance.
You could do pretty much the same thing with the dynamat line.
-- Dynamat Xtreme = Damplifier (Spec wise I like Damplifier better, your aluminum constraining layer is 6 mil in stead of 4 which should be better, and even better would be damplifier pro but it is 2x the weight at about 0.6 lb/sq ft so I thought I would just double the damplifier if I wanted more dampening)
-- Dynapad is Similar to Luxury Liner Pro (Dynapad is a 4 way sandwich, I liked the idea of the LLP a bit better since you have a thicker decoupler under the vinyl which should isolate better from the body panels, or so it seemed to me)
-- Dynaliner is Similar to Overkill (I like dynaliner a bit better because it has adhesive on it already, but I was ordering from second skin audio so I bought the overkill, may still buy the dynaliner because the adhesive may be a PITA to try and get installed inside the doors)