[Jimljr145]

As far as putting the new tires on, I would only trust that to a shop. I am sure there are plenty of ways to do it at home, but think about it, all the time and money you spend on your car, I would want to know my tires are going to stat put once they are on. I would put them in the car and take them to the station and let them do it there the right way. As far as the springs, most things I've bought come with some type of instruction. Read them, listen to what others may say, and get everything ready before you start. I can't imagine installing them would take more than a day for even an unexperienced person as long as you have some guidance. Maybe a buddy or two to help wouldn't hurt either. It is another thing you should not try to do on the cheap though. In my opinion of course. I've never lowered anything, but I've had a few trucks I've lifted, and usually it required some magic by an alignment shop to get the thing to track right. Again, maybe some other's that lowered their cars can give you better insight and / or direction here.