Tackled the rear shocks this past week, went with @07burbs advice and stuck with Monroe shocks. Wasn't too difficult as it's only 2 bolts, but I used a 7mm socket for the fender well liner screws. Used some wd40 to break the rust free from the nuts and bolts, and used 13/16 deep sockets to change the shocks. Use a breaker bar if you are just using jack stands.
*Note: On the top bolt you will need a extension for the socket because the bolt is not welded to the frame. It does have a completely removable bolt unlike some of the videos I watched for Silverados.
Possibly this weekend if the weather holds up, I'll attempt the front shocks and struts.