You can get an OEM BEHR aluminum/ plastic radiator for about 245 or so. IMHO, this woukld be the best route to go, as it would restore optimal flow and maintain the vehicles OEM stature. Whenever I buy a vehicle over 8 years old or so, I feel paranoid about overheating, so I simply buy a new radiator and put it in. It may be wasteful, but the piece of mind for me is worth it.
Good luck, Adam Bush