Thanks guys!
My vintage bus is located in Victorville, CA, which is just over an hour from Los Angeles. It will most likely be transported to Dallas, TX for some additional work and then it will go all the way to Nova Scotia to have the interior done. So, anyplace along that route would be fine to get the stainless made.
The bus doesn't currently have any accent stainless on the sides, so it doesn't have to exactly match anything... although I really like the look of ones with the following dimensions:
Overall height: 13", Vertical space between ribs: 2 9/16", Height of ribs versus valleys: 3/8", Total depth from bus to top of ribs: 5/16"
I'm not certain what the overall length would need to be.
The bus is 34' long and this does not extend the full length of the vehicle. I'm assuming it might end up being about 30' long and will be broken in two spots near the rear to accommodate the engine/baggage door and on one side near the front for the front door.
Do you see a problem with maintaining a satin finish if the 90° sides are welded on, since I'm assuming grinding/polishing is what would usually be done to clean up the welds. I would rather not have a mirror finish.
Here's what the bus looks like right now:
Note: I also edited my original post to include a few additional photos.