explorer 8.8 in an a-body: experience needed

The brakes aren't working right, they are working somewhat.

What beating around the bush, welding on a tube, or heat on a tube and it moves, these are true issues. Right way is to then straighten but how is that done without the jig to set it.
I have seen tubes move when people added a shock mount to them, and a shock mount doesn't take nearly the heat a perch does.

Now you and they know , your choice to do as you please with your car, but state all the facts.
In the case of the OP he most likely never needed to spend 900 to fix his 8.75 correctly, but to have the 8.8 right isn't as simple as it was made to be.

That's all the right info for someone to have to make there own decision