Originally Posted by PurplDodge

The 5100s are the model line more suited for a lifted truck. The Heavy Dutys are the more mainstream truck shocks.

Originally Posted by Sheriff420

it took me like 2 and a half because i wasn't in a hurry but if you go right to it it shouldn't take longer than an hour to an hour and a half. make sure you hit all the bolts with a good penetrating spray and tap on them right after the spray to work it into the threads, just in case they are stuck. if you can't find crc knocker loose then pb blaster is the second best. you need a 21mm socket and a 21mm combo wrench or a big crescent wrench for the big bolts on the bottom (both on rear shocks and the bottom of the front) , and a 18mm for the top bolt on the front shock, and i can't remember the size for the tower bolts. but i think it'd be a waste of money to pay someone to change them because they're so easy. you may need to give the bottom of the new ones a smack with a hammer on the bottom bushing to make them fit, on mine the paint made them too wide for the bracket so i had to flatten out the paint and use the narrow end of a prybar as a line up tool to get the bottom hole lined up. and the rear shock i hooked up the top bolt first and clipped the strap holding it down and guided it into the bracket and shoved the bolt in before it went past the hole, otherwise i would have had to get the line up tool to get the bolt through because the new ones are pretty tight. i went with the sensatrac from advance, but thought about bilsteins. i've heard the bilsteins are pretty good and heard that rancho gets pretty bad after a couple months. one thing i forgot to mention is that i had stock shocks, and i figure 9 years and 124000 miles is a little long to run on the same shocks, what do you think? oh and don't forget to leave the straps on them till you're ready to bolt them down. i got the tower bolted back on before i cut the straps on the front because i didn't want to have to muscle the shock back down to bolt it on.