Just so you know, since Roadaus cracked read engine mounth,
http://www.benplace.com/roadhaus/100_0200.jpg

I have seen 2 others one! worse than the picture above, even if it's not
dramatic (engine won't fell on the ground) i guess that you should do a
routine check, very easy to weld for about 20$. i check both vans because
the vibration was too much on idle! ans i discovered that the broken mounth
amplify the Wasser normal shaking.

Sadly, there is no easy way to check that, exhaust system, rear plate and
sometime even the engine mounth need to be completely remove to see the crack.

Just thought you should know.
http://www.benplace.com