Hmmm..
Well, just build your own ground efx
Get some fiberglass rolls, resin and some urithane foam (I think...)
and build 'em. You measure the dimentions of the car's stock effects,
create a "mold" out of the foam (non plug, just an "overlay") then
start layering the fiberglass. Takes a while, but you really can get
some awsome effects using an

I have seen it done...even to the extend of building an entire body
(which I plan to do one day).

These should help a little:
http://www.fibreglast.com for your glass
http://www.rqriley.com/frp-foam.html for body construction tips

You might just contact some of the kit-car manufacturers (mainly those
who do fiero-rebodies and stuff) about custom work.
www.kitcar.com
that should point you in the right direction

MadMaxx
ps. you want looks from the ladies...get a vette =-Þ