I've been trying to figure out what p/n for a lockrite. I have a 98 4runner ltd V6. The axle code is A03A. With that handy search button above, I'm figuring it's a 8" diff (anyone feel free to confirm), but I'm not sure whether I have a 2 or 4 pinion.

Here's the application list http://www.rocky-road.com/powertrax.pdf