I have to fundamentally disagree. My brother, the audio engineer, has said sound deadening is just something they sell you on. Most cars vome factory with enough material to deaden, and adding a small bit changes next to nothing. Cars are such poor sound stages anyways. If you have problem with rattle it's usually because things aren't snug, and you don't need to waste time deadening, just inset some thin foam or rubber (3m double sided foam tape works great) to prevent the metal on metal contact or plastic vibration. I have run my system at levels that are technically unsafe for even an hours of listening, and I have no vibration whatsoever save for one specific frequency which may rattle my over head console just slightly because it is not snug and has wiggle room. I have NO sound deadening material in my truck. I did have issues with certain pieces having metal on metal contact vibration and it was easily easily solved by just adding some foam tape around the contact points, before I put any pannels back on. This is very similar to raising your home speakers off of hard surfaces with foam.
but yeah don't waste the insane dollar figures on sound deadening. If you get a good system and do some small things it'll be fine.

 

TL;DR: When you install system, before you put any body pannels on, play a bunch of music through it at expected volumes and bass levels(if you enjoy ruining the sound of music by oversaturating bass), and if you hear any rattles or vibration, find the source and address it with then. It's a far cheaper and generally more effective strategy to eliminate the source of vibration, rather than put alot of extra mass (see deadening) into a door panel or otherwise, to help mask the vibration that's still happening, and now just not as resonant.
Like I said before, cars and trucks are terrible sound stages acoustically anyways, so trying to get "good" sound and listening experience out of them is still meh, compared to studios and rooms designed for it, with proper speaker placements. Never mind the door that's acting as a speaker enclosure :P

You should find if you remove the vibration sources with clever little tricks, you'll be happy with your system if you also take care of speaker location and direction,as that will have a miles larger effect on clarity and perceived response. It will further help when listening that you use a quality track, not some mp3 garbage or the radio. If your ears are trained well, you will absolutely notice the difference between an mp3, and a CD or lossless file. I literally can't stand using Pandora or Spotify in my truck.

 

Finally got my headunit I went with this one, here's the link:

Also bought a 4th gen center console (not seat goes the whole way to the dash) and going to install it in my ram and it will hold a scangaugell and a 8in Android tablet. Still trying to find the best speakers.

 

Erm, Ok. Where's the link?

 

It didn't post it here it is: https://alpine-usa.com/product/view/x009-u

 

Is that gonna fit in the dash??

 

Sawzall baby!

 

My face when I saw the price tag on that. You could do two full car audio setups for the cost of your head unit. Should be nice though if you're getting it for free! Be super careful when you're modifying your dash bezel to fit that, the plastic can be quite brittle.

 

Yeah it's pricey, but it's free! I plan on being careful (not my first modification my 08 Ram has the same radio). You should see the price of the speakers!

 

if you made it past the first sentence you would find we agree... sound deadening is a waste of money and cars make so much noise you couldn't tell anyway. audiophile stereo in a car is a huge waste of money. that said, i have never had so much rattling in any other vehicle it might actually help for once to use it. it's not the metal from what i can tell, but rather the plastic that is my problem. everything is secure and tight, so sound deadening mat is the only thing i can think of at this point that may help [applied to the plastic]. the foam tape is a good idea though.

also, i'm not a kid listening to rap on deck power with the bass cranked as high as it can go with walmart 6.5's... i enjoy a variety of music pre 2k [post 2k is autotune vomit], running jl c2's, mb quart 440.4, and kenwwod excellon kdc-x798 which i consider a decent entry level deck. not the best system, but i don't have much to worry about if i leave the doors unlocked at the mall and if i can get the rattles sorted out will play satisfactorily on a leisurely outing.