So I previously made a post about starting problems and got plenty of help and advice but in the end I've decided to completely rebuild of the engine. So my first question is about boring and honing my head out to 81 mm is there any really power gain as for cost it really doesnt matter much because I plan on doing this rebuild through fall winter and possibly some of spring. Also has anyone used wiseco 81 mm piston kit because I have a friend that purchased a blackbird a little after I did and was considering doing the same but decided against it after buying a wiseco kit and offered to sell me it for around 200 instead of dealing with the pain of shipping it back and all that jazz. My third question is fuel injection conversion or carb because I prefer fuel injection and can get what I need from a salvage yard and so on. Any input on these questions would be greatly appreciated.