Yes, I believe you will need a brake controller for the Land Abuser.
If it has a hitch and wiring it may have the controller, ck with dealer.
Not a common tow vehicle but someone here may have more info.
You WILL need a good weight distribution hitch with sway control.
Plenty of good info on whats available right here on the forum.
Don't forget to come back and post pic's when you get the AS, it's required.
"Sticks & stones can break your bones...and hail will dent your Airstream"
So when is this..."old enough to know better" supposed to kick in?