The Epiphany is weighted in such a way that the designers clearly intended for the tank to be in the stock position, and many players find that placing a drop forward on their gun unbalances it and throws them off their game.
That said, if you're set on installing a drop forward on your Epiphany, I would recommend a Custom Parts Razor.
Team: Harding University Team Revelation
Sponsor: Splat Action Paintball & Tech T Paintball
Guns: APS Angel A1