http://ecomodder.com/forum/member-fl...56-640x480.jpg
not sure if I got this picture posted, I haven't been here in a while,but this is what I did to the back of my van, I didn't get any mpg gains, I intend on making it bigger one of these days. I did find an improvement in drivability. If you go to my album and open the Kurbmaster album you can have a look at what I did under it, also no mpg improvements. I had an airdam on it last summer and that gave a bit of improvement but I tore it off when my brakes overheated in a particularly hilly coastal drive, however afterwards I think that was not the reason, so I will be putting it back on as soon as I get a chance. I will also extend the top rear spoiler at the top and taper from the rear lights upwards to meet the extension, likely another 8 inches or so.