I did my own cage, but took my car to Dan at diamond race cars to have him make some headers for me, while it was there, I asked him to look at the cage to see if I needed anything added to make it cert. Dan looked at it and added to small gussets and it was all set, and didn't want to charge me a dime for looking at the cage and adding them. Dan is a great guy, I would recommend him to anybody.