Mike,
Nice job. I think sump guards are a must with the Zetec/Raceline combo if you are driving on the street, Hwy or unplanned off track excursions.
The guard I have been using
http://www.midatlanticcaterham.com/images/Caterham%20skid.jpg
has saved me untold times. To a point that the trailing edge is worn down to a knife edge. May be time for a new one.
I would say yours looks to be a bit easier to put on and seems to be easier to place the jack so it will not slip when raised.
I also like your rear pan. Are you selling that as well?