No, the G4 board will not fit the E1. The G4 board is meant for the G4, not the G4 and the E1. On the G4's board, the LED doesn't stick out past the back of the board. On the E1's board, the LED sticks out past the board, so they won't be compatible. If you want an E1 with a virtue board, just save up some more money and get a better marker.
a better marker? fk u man i just sold my dm8 to get an e1, and its badass.