GSF Silencer to Elbow Exhaust Pipe - Which One?!

[300CE]

As there's 35% off, i'm looking on getting a new one but there are 2 options & i'm buggered if i can find my tape measure - any ideas which one it is:

Part No: 213VG0120 - 560mm - http://www.gsfcarparts.com/213vg0120" onclick="window.open(this.href);return false;

Part No: 213VG0140 - 520mm - http://www.gsfcarparts.com/213vg0140" onclick="window.open(this.href);return false;

Cheers in advance,

Justin