Revolvers are meant to give you EXTREME amounts of droop so you keep contact with the ground and get more articulation.

If you don't change the shocks you will not gain hardly anything as far as extra droop is concerned.

Extending brake lines and breather tubes will be necessary and you may want to check with Ned on what wheel spacers may be necessary to widen your wheel track if you are running stock rims.

You certainly don't "need" them on since stock trucks will be running most all trails at GOX. You may also want to wheel on familiar ground once you do the install so you can get acquainted with the new setup.