If you're going to rebuild it, rebuild it right. If you have all the good forged parts in the bottom end now, you can do whatever you want later. If you leave it stock and later decide to do massive mods and upgrades, you will have to rebuild it again. You can't go wrong with a modded bottom end... it'll hold up to whatever you throw at it..whether it be stock turbos or Sport 600's a few years down the road. If you build it stock, then it'll be doomed to 350RWHP land forever :-))