Each SFC must attach at no more than three points on the unibody (e.g. front, rear, and one point in between such as a seat mount brace or rocker box brace)
If an SFC mounts to the front subframe, seat brace, and rear subframe, that is 3 points. But what if it is a long SFC that is stitch welded along the subframes? Is each weld an attachment point?
Sorry for the hijack.