Do the brackets have to be welded to the chassis or do they bolt up to where the arbitrary bracker bolts to
This might seems like a dumb questions ,but I have never seen a serria ones

 

the bits simply replace the arb clamps

 

oh, but you will need to make sure the bolt heads clear the brackets as if they don't it won't be tight

sounds strange but anyone who's done it will know what i'm talking about as the head of the bolt will catch the bracket and you can't tighten it up any more