So, you went around 112k miles on your belt changes?2.7 isn't bad. Just be careful pulling the crank pulley. (Pull the front wheel first) I used a crowbar gently and still ended up chipping the lip in a few spots. A puller is best. the chips started fraying my serpentine belt till I sanded the rough edges down. Everything on the passenger side needs to be moved or removed(motor mount). Just make sure your timing marked are lined up on the crank and cams when you start and don't move anything before you put the belt on. Then hand turn the crank a few times to make sure everything is on and marks still line up and then reassemble. Be sure to change the tensioner and idler while your in there. Water pump really isn't necessary unless you never serviced the fluid or your under 200K. I changed mine on the second belt change at around 225K and it still wasn't leaking.