"I know one purpose for ceramic coating is for longevity as mentioned above, and it definitely looks nice too ("chrome" finish would beautify the area and match the tail pipes), so I'll look into it just for those reasons. But any effect on noise? Secondly, just to start gathering price points, what's the average cost for the service?" - @Sean Seena
Sean, in our application ceramic coating exhaust systems is for looks and longevity. As for cost of ceramic coating on an exhaust system, add about $250-$300 (US dollars) to a similar non-ceramic exhaust.
On my VS (1915cc mild cam, 40-IDF carbs) I have a ceramic A-1 Sidewinder exhaust with flanged fittings on the heater-box pipes. Click on pics to enlarge
This particular exhaust was not specific to my car so it sits lower than it should. This exhaust was the only one available at the time of my engine build and was used (at the cost of non-ceramic) instead of waiting another 2 months for a exact fit.
Here is a comparison of A-1 Sidewinder in my car vs my buddy SOCer "Dutch" with properly fitted A-1 system.
The lower system kinda gives the car a 'hot rod" look.
Here is a video to reference the sound of an A-1 Sidewinder. This video was made with my previous VS with 1835cc, 1.25 rockers, 38 IDF carbs. Nice aggressive sound on acceleration but a mild tone at cruising speed (not an annoying droning sound).
I hope you find this information useful! 