AJE suspension coil over conversion kit for a-body

So I am building a 69 Barracuda and trying to install a AJE K Member and suspension package.

Has anyone here had any experience with installing the coil over conversion brackets? They have to be bolted thru the chassis and it looks like I have to cut off a bracket which is in the way. The instructions are not very helpful and I dont want to just start grinding away at the spot welds till I have confirmed a few things.

John