On your truck do you have the dial on the dash or the lever on the floor?
One last question I promise. Set the hub in "AUTO" and look at the end that would go inside the wheel hub. Now while holding the outside of the hub can you easily turn the inside splined shaft? I am refering to where the actual axle shaft would be inserted into. Now if you manually lock the hub does that inside splined shaft lock in place and not move?
If both hubs check out send me a PM with what form of payment you would like, and where I am to send the payment to. Also I can use paypal if that works best for you.
Thanks,
Mike