Stoutland holding Leftovers
Ability should be Sand Rush
A good nature would be Adamant
An a sweet EV spread would stack at 60 Hit points, 252 Attack, and 196 Speed
The first move I would say to tack on is Return for some good STAB.
Then you can move into coverage. He gets bolt-beam with the elemental fangs, so having Ice Fang and Thunder Fang together can do you some great work. Although of Thunder Fang doesn't hit hard enough for your liking, Wild Charge can be a very valid replacement.
My most recommended move for the last slot would be either Reversal or Crunch.
Reversal pairs well with Wild Charge. Crunch is pretty neutral to the set either way.
You can also try out Howl or Work Up for your last move slot, if you like boosting.
So to wrap it up, this is what it should look like.
Return for your STAB.
Ice Fang for coverage along with..
Thunder Fang or Wild Charge for extra coverage completing the combo. Along with
Crunch, Reversal, Howl, or Work Up for your last slot. Providing either extra coverage, or a little bit of boosting. I like to alternate both with mine.