In the old Star Wars canon, aka Legends, the E-wing starfighter was an advanced fighter developed by the New Republic as the successor to T-65 X-wing - the same role that T-70 X-wing plays in the new canon.
This MOC is an alternative build (model B, if you wish) of the set 75301 - Luke Skywalker's X-Wing Fighter.
Instructions available at my Rebrickable profile - the model uses no additional parts! -
rebrickable.com/mocs/MOC-89539/john.carter/e-wing-starfig... 