I guess you had this part cad designed, as the rest of the sheet metal work? If so, you should be able to build template/jig for your part.
I don't relly get your problem, but you may need a special bend press with an offseted inside bending die (don't know how to say in english) check this page to understand! Deep Box Bending | SheetMetal.Me
bending issue solved, yet the biggest progress has been made in the area of suspension after only this week I got the message that the control arms, radius rods etc. finally came back from the plater and (hopefully) will be sent to my place next week together with the anti-roll bars, springs and dampers.
Since I already payed for all the stuff (after having guzzled a glass full of Scotch), I´m now hopeful...
Suspension parts have arrived...my thanks go out to Dave for coordinating logistics and Keith for being the most accomplished communication relais of all times :thumbsup: