Bobby, you come off as a pretty odd fellow here on this forum, and I think that doesn't sit well with most of these folks. You've got what appears to be a magic bean, and people just want information before shelling out the dough. I can understand you don't want to give out too much info on your source, that's perfectly understandable.
I would suggest that you might want to do a little PR here on the forum, to ease people's minds. The best thing you can do is get a set of these mounts on a respected members car, here on the forums. Why don't you send a set at no charge to the member of your choice, and then have them make a post with the fit and installation of the mounts? This way the rest of the people who are weary about buying them from you will have an honest word from someone they feel comfortable with. I'd suggest someone like Cobraman, parthos, Vincent, ect. Someone who currently drives their car, and is still 302 powered.
Come to think of it, I would be happy to install a set in my brothers pro-street II. He's got the factory setup, and has headers. I would be willing to take pictures of the install, and post them here. What do you think?
That should make those mounts fly out the door for you. Hope this helps.