Ok so I have a experimental 0-290d2 I have put 470hrs on it and now I'm looking for a little extra hp. I have read lots of info on how to get that done. My question is there any Alaskans tricking out these motors if so how was your experience? I know there are things like lycon h compression piston, port and polish, 0-320 oil sump and carb, 0-435 angle valve cylinders and so on.. but is anyone up here doing this and getting good results ? I know i have a orphan motor and should just go with a 0-320 but would like to keep my 0-290d2 till I absolutely have to upgrade. Thanks for all your input.