Ok, here it is outside in full daylight. Today I laid the coroplast over the spars, and found that I will need much more trimming. Between a razor and a wood file, that part seems to be going pretty quickly. Next step is to continue adding spars and attachment points for the coroplast... and cutting down the spars for less of a beluga shape!
I also spent a few hours cutting down a set of aftermarket springs to drop 'er a little lower to the ground. I tried using a hacksaw,... let me tell you that just plain sucks. Those things are hard! I ended up using a chop saw which went pretty quickly and didn't seem to get the steel very hot. Should drop the front end down 3" and the rear end down about 1.5"... That will leave me some room for taller front tires.
BTW, Here are the wheel covers I've picked out:
Weld Racing Air Flow Wheel Cover System
And here's a nice set of skirts to fit a prius:
Toyota Prius - Wheel Skirts - Toyota Prius Wheel Skirts by Hybrid Effects 1 pair (Shipping Included)