well i fully rebuilt my 1.3 motor added a header exhaust and im now in the market for a carburator which ive heard gives a good boost of power. i would like to get some opinions from you guys? is it pretty easy to install and does it really make a big difference in power? and input is appreciated, oh and whats up with the maual choke? water choke? etc? which weber is the ideal set up for my 88 samurai?