Sheet Metal Brake and other forming tools for body work

I use the front of my car trailer as a brake, it is a simple dal of angle iron siting on a few angle iron legs, some C clamps and a hammer, maybe a piece of angle held on with couple vice grips. I have no tools, but I know the shrinker/stretcher tool would be my first choice.
A sand bag comes in handy too.
Have done that quite a few times my self . I sure could have used a brake making the new air pan, to run a filter on the throttle body that is up in my scoop now , setting on a victor intake. Pretty funky !!