I've had a billet p/u in for years..... Install was a pia
hindsight I would of pulled the bed off.
As for the volume. I have had my volume just as low as before the install and havnt had any issues. I have heard of others that have had probloms with that though?
ya pulling the bed is much easier
I had my low fuel light on when I installed mine, started up no problem & have run that low a few times since no problems.
most of the problems were the hose splitting on the pickup
