Thank you Arrowhead. Since I posted this, I did a little more research into the brake lock differential. I think it will work just fine. I have seldom needed 4wd anyway, but I just thought it funny, that they call these 4wd, when the reality is, they are not. Unless of course you have a Rubicon. Thanks again for your reply.Not to worry, you still will have the brake lock differential on all four wheels (in 4x4). So if you really get into a pinch, the "4 wheel traction control" will kick in (if your in four wheel high or low). The anti spin is just nice to have as an extra, you don't always need 4x4 and it's a little smoother operating that the BLD system.