525SC headers are standard CMI E tops. The don't have the issues of 525EFI headers and half the price. Treat them as any other HP exhaust.
If you're in salt water, flush the engine VERY well. The intake is aluminum and salt will eat away around the water passages. My 525SC was in salt for about 200hrs before I got it and when I pulled it apart at 350hrs, the intake needed to be welded up. It was close to major failure.