Hey guys,I just got my hands on an 84 js440 and I am about to start rebuilding it and I have some questions,first what are some upgrades I could do to give it a little more power,secondly what is a good rebuild kit I can get for it,and lastly if I bore it,how do I need to have it done?is it the as a 4 stroke or is there a special why they bore 2 strokes?y'all just let me know what you think....thanks