In the 80s GM built a new state of the art auto plant in Wentzville MO. They made the new front drive Oldsmobile 98 there. At the unveiling we took 2 new cars to a local banquet center. We pushed the first one down the hall into the dining room and to the right of the stage. It was a tight fit! The second car would'nt fit through the door. Except for color, they were suppost to be identical.
I've measured many cars over the years, and rarely find 2 the same. Wishing now I would have taken notes.
Fiberglass ones are the worst, but sometimes the steel ones get bent just as bad over the years.
wescottsauto.com has great frame specs, but I've never been able to find accurate body specs. Good luck and let us al know if you find a body dementions source.
rick