But, the 60 Series Marine engine has been a very respectable engine and if you own one you should not be ashamed! It could have been higher in horsepower but it needed some major work to the fuel injection system and air handling. They are a little bit on the loud side (Detroit/MTU did not focus a lot of attn. on NVH). But overall a reliable engine. I don't see it moving into Tier 3 without a major group of changes. They could do it with the current on-highway fuel injection system and base engine changes that have been made but I have not heard that MTU will be certifying this engine for Tier 3. I have in fact heard that this is the last year you can purchase it and for those that have had any major engine issues, the parts situation has been frustrating for them. FWIWWhat about the 13 liter series 60 rated at 820? shes already there no?