Hi John.  To make the conversion, you will need to find some electrical
way to open up those little rubber tubes!  ";-)

There is a group on Yahoo called e-valves concerned with that.  It's
a fairly quiet group of folks, many of whom have excellent ideas and
suggestions.  Come visit!  http://launch.groups.yahoo.com/group/e-valves/

I'm in the process of electrifying a Marshall & Wendell Ampico upright,
and I'm considering electrifying my recently-acquired Wurlitzer Apollo
ArtEcho grand as well.

Regards,
Bob Loesch