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Message: <blockquote data-quote="Burninrock24" data-source="post: 1138563" data-attributes="member: 18179">I don't know about the make/model. I just gathered that info based on these posts: <a href="http://forums.nicoclub.com/chassis-stiffening-foam-result-part-1-qualitative-result-56k-no-go-t270721.html" target="_blank">http://forums.nicoclub.com/chassis-stiffening-foam-result-part-1-qualitative-result-56k-no-go-t270721.html</a><a href="http://www.iwsti.com/forums/1196552-post10.html" target="_blank">http://www.iwsti.com/forums/1196552-post10.html</a>I don't think that the long roof would translate to torsional strength. I think where they excel is in perpendicular forces, like being rolled on top of itself. Same with the early 2000's eclipse doors, the roofs of SUVs have channels molded into them that add to strength. Similar to corrugated metal. and as somebody who has dealt with corrugated metal, it does not resist twisting any more than standard metal. If there is any rigidity to be gained by having a large chassis, I'd imagine it would be because there are A, B, C, and D pillars to anchor the chassis together, versus AB or ABC layouts. As to what I would expect, I honestly don't know. Some claim that it helped their Miatas extensively. And from personal experience of driving my buddies Miata from time to time, their chassis is much stiffer than ours. But does our flex come from the areas that we can correct with foam? I don't know entirely.</blockquote>