Well there wouldnt be a lot of bending involved. But it all depends on how the shop set it up.
When I got my body lift, I just cut the tips off right after the rear axle. I still had duals, but not tips. Then I took the truck back to the shop, they still had plenty to pipe to work with. All they had to do was weld some pipe back up there, and made it close to the body of the truck.
They shouldnt charge you much for that.