Most Jeep dealerships will be able to sell a 2007 Jeap Liberty either from their stocks or from their extensive network. Alternatively one could search Autotrader, eBay Motors or Craigslist for a local seller.
Go buy the Chilton or Google
You buy a direct plug in kit from the Dealer.
You can buy 2007 Jeep Commanders from used Jeep dealers on your local area. To find a list of new and used Jeep dealers in your area check your local yellow pages.
AST tool
Tie Rack
You can not. There are no rebuilt cats and it is not legal to sell a used one.
Click the link.
One can buy a brand new Jeep Sahara from the Jeep dealership. One can buy a used Jeep Sahara from Kelley Blue Book. Another place to buy a used Jeep Sahara is on Auto Trader.
To replace the steering pump in a 2001 Jeep Liberty, it will cost around $160. This can vary greatly depending on where you buy the part.
If you are willing to dish out some cash, get a set of JL audios
I would buy the product on ebay because they have reasonable prices. It is also convenient because you don't have to leave your home.
buy the wiring kit from parts store then just plug it in