If you shoot me an e-mail with your address I can send a package with some info. on the Heresy's; mods from Speaker Builder. Or I can try to scan it but there are about 5 pages. My E-Mail Block2@optonline.net
You know what; good question. I would ask. I don't know how long FredT has been doing this but I certainly think it could be possible. Good Luck with the mods. Don't worry about getting it back.