The 365 N has heavier reinforced undercarriage and harpoon installation for deck landings. I heard a figure of 1.5 mil a pop to totally overhaul the Dauphin avionics including removing the 4 axis autopilot and replacing it with a 3 axis and replacing the search radar with a lighter, cheaper and more reliable weather radar. The weight saving alone would enhance the usefulness of the aircraft, and seeing as it won't be used for SAR in the future, it doesn't need some of that junk. The progress made since the 80's on reducing component size is obvious, I mean just look at the mobile phone. Doing this overhaul and purchasing 2 new 365N's would work out much cheaper than replacing the whole fleet with two types. Use the extra money to concentrate on getting the medium lift right and you have an instant improvement in your light utility capability by having faster, more useful Dauphins instead of 135/145s. Oh, and will someone PLEASE paint the damn things GREEN!