Bassman Rectifier tubes

[RHartt1234@xxxxxxx]

        I have a gig with a rented Bassman RI this weekend and was thinking 
about bringing along a couple of tubes since I'm sure the amp will come with 
a solid state rectifier and a 12ax7 in the last gain stage.
       What is the lowest wattage rectifier? I believe it goes something 
like...
       solid state=45ish watts
       GZ34= 40ish watts 
       5U4GB= 35ish watts
but my order and approximate wattage may be wrong.
       Ryan