The coating is sound-deadening and has no other effect on the operation of the sink. You could go to a car stereo place and get some sound-deadening material to glue on. How well it held would depend on what's there now....you may have to scrape off some of what's there to get anything to stick. You might just use some low expansion spray foam that doesn't get brittle, or forget about it entirely. As to the holes, if the faucet you want has a base that would cover the existing holes, you could just cut new ones. Keep in mind that SS is pretty tough stuff. It works best if you use a punch, but a hole-saw will work, but if it's not good quality, may burn some. If the sink cleans up, you could just reuse it. If it is discolored and scratched, you may want to replace it. There are lots of choices. Last I looked, Kindred (made in Canada) had some nice sinks that weren't as pricey, but good quality as some of the more familiar names.