Better check a roof pitch scale with that last statement. A half-inch circumferential drop on a 46" arm will HARDLY result in a couple of degrees caster. That's 'generous writing' that defies geometry.
buddy is dropping a '34 cab from a one ton truck onto '32 car rails... he pointed out that the truck wishbones were so long... hmmmmmm.
Here was my take on lengthening or repairing a cut-off 32 wishbone, with pictures... https://www.jalopyjournal.com/forum/threads/tech-a-10-32-wishbone.519077/
Look at post #6 in the thread below for the missing pictures in this thread: https://www.jalopyjournal.com/forum/threads/fabricating-a-wishbone.453014/ Brian
I wonder if someone with the right privileges could substitute the photos? How is Mike @av8 going? He hasn't been on here for awhile, he contributed so much to the trad knowledge library.