I haven't changed the shocks on my Titan yet, but other vehicles it didn't matter. I've changed rear shocks without even lifting the vehicle up before, just crawl under remove 2 bolts and put them on.
Replacing shocks is probably the easiest self maintenance thing to do...except when you get a bolt that is impossible to break over..but once you get it spinning it's easy. The only real suspension problem I've ever had was trying to bust the bushing on an idler arm on my pickup in high school when I was replacing it. We had the ten pound sledge and a crowbar going to get it off LOL..but it worked
