Well I have to move my bed back 2-3" for the spare tire to fit properly without rubbing the bed lip. I was hoping that I wouldn't have to do this, but once again I assumed ( assumption, The mother of all ____ ups) and was proven wrong! I know that there is four L shaped brackets and two spring bolts brackets that need to be moved, But I also noticed that there are bolts from the bed into the wood between the bed and frame. Do these bolts just go into the wood or do they also go into the frame? Since there isn't any sign of a head on the frame I imagine they just hold the wood slats in place. This is on a 84' M923. Thanks for any and all advice, Have a good one!