I just recently acquired a TD04H turbocharger off of a 1st gen DSM. I brought it from e-bay for 175.00 complete. I'm gonna have it ported and rebuilt if necessary. I have a question they have an ad for a turbo flange on ebay. What are they used for or need for? They say it's perfect for a turbo header or header in general. Do i need one of these? Is it the equivalent to a gasket or something? Not too sure, hit me back with any info. Thanks H-T.