Tell me more about the 4Runner. 3RZ or 5VZE? 4WD? Auto or manual? Elocker?
From the pic, I'm guessing it's going to be more than hood and quarters. There's not much room between the grill and radiator on those, I'm betting the core support and radiator are bent in. I took on a similar project a while back, never did get the core support lined up and straight again. Got it good enough for the guy who was buying it, but it was plain to a casual inspection that it wasn't right. There's a reason body shops charge big bucks. If the frame is tweaked badly enough it might not be worth trying to fix it, but a solid axle might make a midly tweaked frame irrelevant...
If the rest of the truck is clean inside and out, it's at least worth $1000-$1500 just in parts. If it's a 4cyl it could be completely trashed and still be worth $2000, that motor is in high demand.