2 stacked stock tt gaskets here.
If you're going to break apart the motor and you have a little extra dough then go for the stock or built TT pistons. It all depends on what you want and what your ultimate goal is.
If all you're doing is slapping on a turbo and your compression is good (check it before you tear down, obviously) and you're not planning on more than 700 HP then just get a thicker head gasket. Granted you may pull more than 700 HP out of your stock NA block, but if you're going for big big power then you might as well spend the extra couple hundred and build it up.