Ol' Skool Rodz did an article on how to make your own dies and shit about 6 months ago or so.Very informative.It's one of those things I was going to do....you know how that goes.Check that mag if you don't get anywhere here.
Welcome to the site. Give Hank Young's shop a call, they have a local guy who punches louvers. Hank told me about him at the Atlanta Easy Rider's show last year. He punched a flat fender for me and I'll be damned if I can remember his name or number! LOL!