Don't go Flowmasters with x-pipe. Will sound like shit. IMO
Found this one. Not flowmasters, but Mac's, which is as close as you're going to get to flows.
[youtube_browser]sLBAQ_L9a-s[/youtube_browser]
[youtube_browser]8TUiC9-mPr0[/youtube_browser]
Shitty?
[youtube_browser]rh0R-G2-IZY[/youtube_browser]