The hitch Drew65 used is a
Reese Towpower 37042 (link is to Amazon, but you can find better deals). It's rated for 500# tongue weight and 5000# towing with a standard weight carrying hitch (it will do 600# tongue / 6000# tow with a weigh distribution hitch, but it's not very common to see that light a trailer with a wieght distributing set-up).
That hitch is HIGHLY adjustable for width and the amount of "drop" (how far down it drops from the truck's frame). I had no idea it could be set up to have as little drop as Drew shows in his installation. It makes for a nice, tight installation with minimal loss of ground clearance.
@Drew65 - did you end up having to modify the hitch at all to make things sit that high? Does the receiver tube stick out far enough to leave the ball on a standard insert in the clear?
On my hitch installation, I did not tuck the hitch cross bar up in front of the truck's rear cross member, but that's a good idea. Mine hangs just a bit lower. I described it, and some other options in this thread:
2" Receiver Hitch on M37