I had to remove all of the rusted rear subrails anyway, so I fabbed my own. It is not like a lot of the modern builds where it has a little channel to it. Mine is just basically sitting on top of the frame. I wanted it to mimic what a guy building a race car in the 60's would have done.
Looking killer. Can't wait to see the blue glass in there. Next time through town I'll have to stop to see it.