Couple of answers - the recipe is from the new Raichlen show, really just an oil based marinade. The sauce recipe is on his website too.
As for cooking time, they were on for about 25 minutes. I checked them after about 20 using the poke test, again at 25, when they felt pretty firm. If you do bigger ones (like 12 per pound) I would estimate about 35-40 minutes.