I set my Companion as far forward and as high as it would go. I have almost 8" bed clearance and tow just a bit nose-high. I need that clearance because we do camp off-road a bit. I have enough clearance that I don't hit my bumper when turning. I also can not hit my cab when turning, right or left, when going forward. I have a short-bed 4x4 crew cab and a very square-front FW. ALL will hit in reverse, at some point. From what B&W told me, in this position, the centerline of my kingpin is only about 1.75" in front of the centerline of my rear axle. On the gooseneck, though, it's right at 4".
Lyle