I didn't know if I should post this in the appearance or how-to section, so i guess i'll just link it. check it out, i just got a chance to see the black pipe next to an OEM silver one, and it really takes the attention away. it's a nice, clean look and i'm really happy how it turned out:
http://www.r6-forum.com/forums/showthread.php?t=64841
http://www.r6-forum.com/forums/showthread.php?t=64841