I need an inverted oil and fuel system. Does anyone have a good reference to a pressure carburater that works well or do I need Fuel Injection. I actually have been dreaming about having another 30 horses under the cowl, and maybe even switching out the entire engine to an I0-390. Now the questions for anyone who really knows begins. I know forsure that I have to change the configuration of my bottom cowl for fuel injection, however would the top cowl be usable or is the size actually different on the 390. I am currently running a two blade BF Hartzel Prop from Vans that is good for the 200 hp IO-360. Is this prop accepteble on a 390 or does this need to be changed as well. Engine Mount is it the same as the O-360? What all else would have to be changed besides baffles and all the little insignif's? Any help apprecieted.