Have a bent frame. Looking for knowledge on the subject.

Bodyperson said
Just cross measuring will not tell the whole story. The length and height can effect a cross measurement. The car is 3 dimensional. If the length is correct and the width from centerline of the car is correct and the height is correct then there is no reason to cross measure. I have used plum bobs and mapped them out on a level concrete floor. Height is determined with the sheet metal.
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My buddy is gonna help me with that redneck construction site lawn dart thingy Bob on Sunday. Ill know more then, but its really the first time ever using one for both of us so mistakes may happen. Theres no motor or trans and basically its gutted. any advice ?