Ebay 3" Front Spacer and 2" AAL Question

Alright, so I've been throwing around the idea of adding a bit more lift to my truck. I found this kit on ebay: https://www.ebay.com/itm/143440995780

It doesn't come with u-bolts like the fat bob's or sst kit. Do I need new u bolts or will the stock ones work fine?

 

I read somewhere that you should always replace the U bolts when changing the leaf springs.

 

I didn't replace the U-bolts. After throwing that AAL in there you end up with just enough thread at the ends of the U to stick out of the nut. Put red threadlocker on those puppies.

 

So you have this kit or something similar? I've been wanting to go ahead and get it, but I'm trying to get more info on whats needed to run it. Have you run into any issues with the factory UCAs.