Anybody know of places that will?
I think Kevin Leitem had his IC tubes done some time ago, but he is near Pittsburgh and there's some kind of Extrude Hone factory center there. Not sure who does it in your area, but you could probably email the factory sales team to find out.
I did not have the tubes done, but I did have the intake manifold done. Extrude hone is about an hour from me. Yes it is expensive.