it's a decent differential. a lot of people hate name brand knockoffs and i would too if this differential didn't just need minor modifications to be a good product. if you use the bolts and washers that come with this product from the box, IT WILL FAIL. the washers that come with it are known to fail very early and bolts are known to back out and cause failure. i bought replacement washers and bolts to remedy the situation from http://rbryant.freeshell.org/obx_washers.htm and it is very much worth it.