Here is one thing I will GUARANTEE: No 505's will be used in EMS.
I'm pretty sure you already promised to eat your hat as it is.... the market for these ships isn't so much US or EU HEMS operations, but more MEDEVAC for Africa/China/Emerging helicopter markets.
I cannot seem to find on the internet a figure for the interior width of the 505
It doesn't look like it has the interior width, but assuming a few inches less on the inside, it looks like 5 ft/1.2M across
http://www.bellhelicopter.com/~/medi...shx?sc_lang=en