Been out of the loop for 2-3 years anything new?
Headers dropped in 25 minutes , cutting , welding and mandrel bends took a long time , lots of trial and error , they had no pictures of other installs for guidance , that would have helped .
Any good muffler shop should be able to do the job , might not be mandrel bends , but not a big deal . The shop I was at lives and breaths ultimate flow and looks so it took a long time , everything had to be perfect .
If you bring pics of my system it should give the shop a good idea of hoe to bend and fit the pipes , should take considerably less time .
Good luck with whatever you choose to do