Just finished installing and testing the spool.
First off - the build quality. Upon opening the package I inspected the spool for the finish, it is amazingly well finished. I began installing the spool and immediately noticed how tight the tolerances were, again, absolutely perfect. This is a very well made product, not a cheap imported knock-off.
Performance - I am running an ESP 34cc full race port with Bartolone unsilenced pipe, 23/58 pinion / spur combo. Axles are all FLM heat treated with 5mm pins. This locker makes my DB lock up and put the power down BIG TIME! It corners on throttle much better and off the line acceleration is astounding!
If you don't have one of the in your DB I suggest you do. That or get used to being passed by the guys that do have one. Completely changes the driveability of the DB. By buddy with his 30.5 Reed OBR in his 5ive T is NOT HAPPY that I am eating his lunch.