You can see here on this sandblasted frame rail that things have gotten a little crazy. If this was POR-15, you’d never get it off the sandblasted surface, and have issues with future layers of paint. Note that we have drilled a new hole in this photo – it is the second hole down and lined up with the main tube. It’s a necessary part of this process and does not harm the strength of the frame rail because it is in this reinforced section. It is also hidden when the rails are on the car.