ASCJ,
At the risk of firing up the hornets nest again, once you've done all your own research you need to talk to Roger Corbin at Rotorlift in Tassie. They operate 355's in EMS roles. He is also spending a shed load on glass cockpits and re-wiring the old beasts (from an independant source I believe he's doing quite a good job...I haven't seen them up close).
Just watch out for the Corbin factor...."hey....where's my wallet/hand gone?"
Cheers
FBD