Judithgap wrote:
I thick this is what I am looking for. It is an adapter that attaches to the trailer itself to use the gooseneck ball.
http://www.etrailer.com/dept-pg-Trailer_Coupler-sf-Gooseneck_and_Fifth_Wheel_Adapters.aspx
if you're interested in this type of setup just be aware that there have been some concerns raised about it. Two i remember are 1) may void the frame warranty and 2) may put too much stress on the pin box structure leading to frame cracking. There may be others. Personally, i don't know the validity of either, but i would do more research before going in this direction. There have been numerous threads on this forum on this topic so you should be able to find more info thru the 'search' function. May also want to contact the frame manufacturer of your trailer to get their input.