[moonmonkey]

if you look at the aeromods done to the ford fusion 999' lowering the car was listed as the biggest benifit at .08 reduction? google it and you can find the car and data , i have read data that suggest if your undercarrage is very aerodynamicly dirty then lowering can hurt by not allowing the turbulet air a large enough escape area (research that your self), so lowering in conjuction with a bellypan, but as suggested originally by frank some combination of all three,would probably be best. i have panned my car and am now eyeballing an air dam with a high center to allow air thru the middle of my undercarrage and diverting air away from my tires and wheel wells. i would love to lower my car but it would have to be rasied back up several times a day, to get in and out of my 3/4 mile dirt road to get in and out of my property,i can think of no cost effective way to do that on my echo. so if its chjeap for you thats awsome!.