Extended radius arms?

[sum dum munky]

I did an SAS on my 1987 Ford F150 with axles out of a 1976 F150... I had to extend the radius arms like 9" to find a place to put the radius arm brackets. I had a shop extend my existing radius arms using some DOM seamless tubing to extend them. Problem that I'm having is that they are bending. Is there a place I can just order extended radius arms??? I swore at one point I saw them on Broncograveyard, but now cannot find them...