RAM 4500 with 8'6" flat bed for towing 5th Wheel

mdamerell wrote:
The only gooseneck adapter Lippert endorses is the Reese Goose Box which they sell on their site.

False - there are some other exceptions for some of the smaller 5th wheels out there... I've been talking to them about the Open Range Lites ;)

To the OP - yes please get it in writing from the manufacturer... To answer your question - most of the GN adaptors I've used do have some decent adjustability but depends on model...