[AT] little ot maybe gooseneck hitch

[Lew Best]

Hey guys
 
Been a long time since I had a gooseneck trailer; need to mount a hitch
in my truck bed for one now.  Got a fold-down hitch at a yard sale;
factory mounting brackets priced outa this world!  Local place wants
“about 400-500 bux” to build the mount & install it.  I got a pic of the
factory mounting kit; looks easy enough to make but what I can’t recall
is exactly where the ball mounts.  Directly over the rear axle?  Little
ahead?  Little behind?
 
Any tips appreciated.  BTW the truck is an ’05 dodge ¾ ton diesel; 8’
bed.
 
Thanks!
 
Lew near Waco, TX