Mark,
Wow, thanks for the advice. By the way, whats a cube speaker and who makes them? I'm not too familiar with that. And the factory hole in the dash - a 4x10, you think? What head unit do you use on the 250? Its difficult to find one that looks good on a classic dash! I'm attempting to have the original Becker Mexico repaired so I temporarily mounted a surplus Yamaha radio on mine.

Ian