The J would be a pre-bent piece with a long straight leg (looks like a "J". ) You just cut it to the length or the amount of bend that you want and weld it to other bends or straight sections.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.