A fit chart must be filled out in full for any RVGC products ordered. See the link below to get the fit chart.
The RVGC Gooseneck Coupler is a product that will allow you to pull your 5th wheel camper with a Gooseneck ball without having to bolt on an adapter. This is a one piece product that bolts onto your existing bolt holes where your king pin box is mounted. Simply unbolt your existing king pin box and install the RVGC in the same bolt holes. This product is rated at 24,000 lbs and a tongue weight rating of 6,500 lbs.
The RVGC-A is the adjustable version which gives you 4" of adjustment down by the coupler and most trailer manufacturers have adjustable whole patterns to allow you an extra 3" of adjustment. Which makes the total about 7" of adjustment.
RVGC-4205A fits lippert frame with pin box models 1621, and 0719
RVGC-4210A fits lippert frame with pin box models 1716, 1116, and 0115