Will an EV-81 tube fit in a Border Patrol DAC?


Hello,   I would like to replace the stock EZ80 rectifier 

with an EZ81 rectifier in a Border Patrol  DAC but don’t 

know how to. There doesn’t appear to be enough room 

in the tube chassis to do so, since the 81 tube is 3/4 inch 

longer than the 80  

Any help would be greatly appreciated. 
thank you!

svcc

Sorry for inaccurate description.  I should have listed EZ81 rectifier in title, not

EV-81 tube. Excuse my ignorance. 

I would NOT do it.  The EZ81 draws 1.0 A vs. 0.6 A for the 80.  Could damage DAC

A great reference for tube equivalents is any late model Hickok tube tester owner's manual.