I started wondering about the 5 way binding posts you can buy for home built projects. Usually, there is a shaft that goes through the chassis with a bolt that goes on to secure the whole shebang to the unit. I've seen bad ones with really large diameter shafts, but I believe there are ones with narrower shafts as well. I started wondering, if you got really, really, lucky whether you might be able to screw a 5 way binding post into a barrier strip if you removed one of the screws? Has some relevance for me b/c my Quicksilvers are relatively incompatible with the kimber spades I have--I ended up creating a screw in extender anyway to accommmodate the fact that even the "narrow" spades were wider than the gap in the barrier strip...
Bob-you might try autosound specialty shops. I think I've seen gold plated barrier strips for such uses. I think the "turn your car into a rolling boombox crowd" tends to buy goldplated everything. (Tried to post something last night but it never showed up; must have hit the wrong button or something.)