first go here and find the gauge/gauges you want.
Be sure that you get the right part numbers and description. For instance my first e-mail asked about
"1 3/4" (45mm) AEP-015-BZ, electrical oil press. meter with black face, green backlight and red needle"
Then E-mail this guy over at Omori....
if you want tell him Mike Katz told you to contact him. He runns the over seas department.
That should get you going. Keep in mind when contacting them that they are in Japan, and that you probaly wont hear back for a day or so.
Hope that helps... keep us posted on what hapens....