Is there a simple conversion kit out there to convert my autolocking hubs to manual? I rarely 4x4 my truck and my r/f hub is starting to make funny noises.

 

You don't need a kit. The internals of locking and auto hubs are basicly the same. More then lickely you have three to four screws holding the hub cover on, take those off, then there is an internal snap ring holding the assembly inside the hub housing, as well as an external snap ring holding it on the axle. Pull the assembly out and the locking hub should go back in in reverse order.