2013 Tacoma rear locker options

are there any lockright, powertraxx, or spartan type drop in lockers for my 2013 Tacoma?
It's SR5 not TRD/Offroad...no factory rear locker, just the "electronic limited slip" instead of the mechanical limited slip my '05 had.

I think I've read here that the factory e-locker uses a weaker 8" ring gear versus the 8.4" that seems to be in the non-factory-locked trucks?

I'm not necessarily opposed to the factory e-locker, if it's an easy drop in.
I won't be doing crazy hard core stuff; it's just nice to get the little added traction from a rear locker at points; and walk out of something instead of spinning a rear wheel.