What gaskets do i actually need when replacing an up pipe? my invidia finally came after a month! I have no idea what gaskets are needed and couldnt find a simple answer. Could i us the right stuff gasket maker or is that a no go because of it being on the block? I had heard it was good stuff and used it for the down pipe to mid pipe gasket and the mid pipe to rear and it worked great i have 0 leaks but could i do this on the up pipe or no?? Also if not could someone list me off the gaskets im actually going to use? Also does the up-pipe actually change sound at all??