1915,
For the 185, SIDS is now incorporated into the Service Manual, as I understand it.
You have until towards the end of 2014 to complete the required inspections, as I understand it.
I'm sure others may have a different view.
From your photos, you would be in an ideal situation to complete these during the rebuild.
Mine falls into the severe use category but not the severe corrosion zone.
I'll keep you posted on how it goes. Hopefully there are no major surprises lurking.
185