Hi Jacksun , klhansun is correct in the imperial and metric measurements. What is not mentioned in this post is that this is just standard exhaust tubing, which can be purchased from any muffler shop. The rest of the box is 16ga just like the original. I have been driving,showing and travelling for almost 4 years now and not one person has ever noticed the slightly smaller diameter and gauge of metal used. Also have won awards and certificates.
Even the classic car guru's have never noticed. So I would say it's an absolutely perfect choice and does the job well. Most importantly at the time of the build, the cost was about 75 percent cheaper than a brand new bed. I am very pleased with the look.
