Has anyone used this duralast kit successfully. It seems it has USA made koyo bearings. I have a standard suspension with rear drum brakes. I’m just wondering about the quality of this kit.

Thank You

 

Give it a shot. Worst case you return your box for a core

 

I've used it and it was fine.

As far as using it for a core, good luck with that. do a search around here (I've posted quite a bit about it, I tested every box I could find in my area) and on youtube and you'll find that none of them are what they are being sold as, so if you have a box with a ratio that you're happy with you're better off rebuilding it than trying to buy a replacement.