Demon,
Both regular and SVT Duratec pistons are cast hypereutectic...at least 2 different articles on the Duratec have mentioned it. SVT has thicker crown and I believe different rings..though I guess it was 3L pistons that were the prob here so SVT parts will not help.

1999 Amazon Green SVT Contour (#554/2760) "People demand freedom of speech as a compensation for the freedom of thought which they seldom use." -Soren Kierkegaard (as posted by Jato)