Inner tail panel valance question

[mrr1999]

Hey guys-

I need to replace my inner tail panel valance and had a question. Since the rear frame rails are welded to it, will I need to brace them or the back of the car in general before I remove it or is it a simple remove and weld up the new panel?

Also, I am assuming to do that job, I will have to remove the rear leafs since they attach to the frame rails, right?

Since it's my first time, I don't want to mess anything up.

Thanks.