Has anyone heard of (or experienced) a cracked exhaust manifold on a Honda Jazz?

2002 GD 1.5L Vti-s L15a1.

Went to the mechanic today for a pink slip and he said that he thinks I have an exhaust manifold leak.

I've just cleaned up the EGR valve (havnt driven it yet), and will check tomorrow the exhaust manifold shield to see if that is what is vibrating and thus causing the noise.

Cheers