just bought a new rear end and have question

[dinomite]

I have a uniqe answer to find out if you have a locker:
1. Obtain a boot, or park your car somewhere so that it gets booted. If using latter method, skip to step 3.
2. Place boot on car.
3. Turn on car.
4. Rev car to peak torque point.
5. Drop clutch.
6. Check for broken half-shaft on side of boot, if broken half shaft found, thou has a locker.