I've checked with the company I've been using for Power Coating of my
Sentra's parts, WWW.TECKOATS.COM and they tell me the Sentra's with the
plastic valve covers cannot be power coated because the valve cover can't
take the heat. They say it's best to paint them. Check this place out on the
web if you need some power coating work done, they do very nice work and they
don't over change you, there in shop time is only 3 days or less. The only
down side FOR ME, is they are in Ohio and I'm in California, so it depends on
how I ship to them (UPS/FEDEX/USPO ground,2day,3day,nextday,overnight) as to
when, what I'm having power coated gets delivered back and forth to me.
Ron