Hello and welcome the the CACC, Scoop. So, is there a Brothers, Oregon? :L
Anyways, are you going to race your Vette or do you just want to save weight? Some of the Shark owners I've seen at the races just dismount the bumper and race without it. If you want the look, you might think of making your own fiberglass piece. This sounds hard and I'm pretty sure it's not the easiest thing to do, but it's not impossible. Hot Rod Magazine did an article on this a month ago and it seemed kind of cool. If you can find a book on fiberglass this would probably provide more detail. You have to make a mold first from you original. The most difficult part seems to be seperating the mold and your original bumper, as well as the FB piece and not cracking it. Chris, 69MyWay, has the most experience with fiberglass and might be able to help you out, also. Good luck, dude. --Bullitt