So I need to rebuild the head on my blaster, right now it's completely stock right down to the exhaust and tires. I have a friend that suggested I should get an oversized piston. Of course it would add more power which would be great, but I dont want to have to deal with changing anything. I really just want a reliable blaster. So my question is if I went to a .20 bore what modifications am I looking at to make it run nice? Is it really difficult for the mods? I'm not a blaster expert, I'm more of s blaster noob as you can tell. So bigger bore or stock, would I even tell the difference in power?