I've got a boat with a HP rating of 135 I'm looking at upgrading motors (currently have a Mercury 125) and I know Mercury makes a 135 4 stroke sold in Australia is there any way to buy one of these in the US ? Thought about the new 115 Pro XS 4 stroke but would really like a little more speed than that (currently running around 45 GPS) kinda figured it would be about the same as what I have now and also thought about the 150 but alot of people said don't go over HP limit so I don't really know what would be best thanks for any help.