I did a long sound deadening post. That is in my build thread. You can find both by clicking on my profile pic.
There is a new amazon brand sound deadener. I don't know if its as effective as noico or cheaper.
Look into
carinsulation.com i used it on top of the sound deadener. Its a heat sheild. I would highly suggest it over the tunnel and front passenger areas at least.
I also added ACC carpet. Which can not be removed and hosed off. But is alot thicker and adds alot of sound deadening. Buy thru rockauto. But request free color samples from manufacturer. As colors on site can not be actual.
Replace plugs with iridium. 300k mileage iirc. Replace all fluids. There is a fluid guide thread on here. Very helpful. Buy an extra fan belt and other common repair parts. Rockauto is your friend. Look thru threads on tools and emergency gear to carry. There are many.
Consider a hardtop.
Make sure wheels are properly balanced. This can be a challenge for some tire shops.
I would suggest rancho shocks. I believe it is the 5000x series. They are not expensive and the most popular around here for comfortable ride.
Also read about tire pressure. A lower pressure will give you as much comfort as a better shock. I run 28psi. But you can get away with less. Read threads on this.
Go thru your cooling system and ac. Make sure everything is running properly and not in need of repair.
There is a larger oil filter you can buy for not expensive. Its from another car that just so happens to fit our Jeeps. I don't know how much that might help your trip. But I would think it would do a better job of filtering your oil. Considering you're probably not gonna do that on trip. Just a good long term tip.
If u are using a soft top. Get some foam pipe insulation from home depot. Put around soft top frame. To reduce flapping noise. This can make a big difference. And is like $2.
Polk makes great economical speakers. Alot of guys here use them. Get your 4 speakers and stereo up to date. At least able to connect phone to it. Many more listening options with spotify.
Documents. Drivers license, insurance, health insurance cards etc. And digital copies of those and others. Just take pics. In case you lose your wallet.
There are also a ton of roadtrip checklists online.
Good kuck!
