I can tell you guys that this is a complete system. No need to buy anything else, nothing. If you talk to Willy, he is the owner, he will answer any and all of your questions. As far as how easy it is to install the hardest part is the welding. If you are an experienced welder this is a must it will be a piece of cake. Your initial measurements from the existing local of the center of your lower control arms is another important factor, but the instructions are very complete and go into this quite well. As far as advantages, number one is rack and pinion steering. Number two is the amount of room you gain losing the shock towers. Three is the coil over setup, it just lends itself to unlimited adjustability. You can set this car up for handling, straight line performance or just a great street ride, and ride hight adjustability. You can even opt for the dropped spindles and get your ride real low without sacrificing ride quality and did I mention room, room for a pool table under the hood. If and when you do this the first time you drive the car you just wont believe that your driving your good ole mustang it is that good. There are people out there that say it is not worth the effort unless your doing a mod motor swap and there is no alternative and that you can get your car to handle better with the old type setup but I totally disagree. If you dont know how to weld hire a welder to do the welding. There are numerous guys that do nothing but portable work with rigs right on there trucks that will come right to your house and it wont take them long at all if you set up everything before they even get there. You have to also remember that it is a mustangII type kit, that has been totally reenginered and the components are way better than the original type system. Which just makes it alot better. You can also tell them to leave out certain components and use whatever brake shocks and springs you like.