just a few questions.. what would be better air filter or intake kit? how much would it cost to get motor rebuilt? and how do i take off the restrictor cone and what are the ups and downs of that??

An air filter is part of the intake, but I'm guessing your asking the difference between pod filters and panel filters, if so a panel is better for most situations unless you build a decent box for the pod Rebuild cost can be anywhere between $1,000-$10,000 depending on what you want/need??? Don’t know about this restrictor cone??