Received my tubbing from
http://store.racing-solutions.org/info.html. I would rate it an 8 on a 1 to10 scale for quality and a 10 for price.This is mild steel stuff. There are some minor tooling marks on the clamp end and one or two minor bumps on two of the six pieces I received. It appears that the dimensions are consistant but I'll know more when I start cutting and fitting. I'll follow up at that point.