Eaton E-Locker
 

first off does anyone know what if any differential I have in my truck (stock w/ 3.73) also does anyone have an opinion on the Eaton Elocker.

You have an AAM 11.5 axle. The locker sounds very promising offering LS until you lock it. Best of all worlds it sounds like...
I have no experience with it, nor do I know anyone with that experience.

It is a very good unit I few guys i know have them and I am purchasing one as well as stated its a LS off which is nice but wish there was a option for a open unit so I could put one out front too. The other nice feature compared to the Detroit Electric Locker is that its all internal the Detroit has the solenoid mounted to the cover exposed Damage Hazard to me.

Is the Elocker available for an 11.5?

No nothing is avaliable for the back. only the front and its for the chevy so you have to grind to get it in the dodge.

At least you can get an ARB for the front.