This isn't a SVT motor, yet... There has to be room to grow this new motor for the top-shelf Mustang to come. Personally, I'm OK with these rods being almost maxed out at 7000 rpm and 412hp in a NA motor, logic would indicate that when they do build a 5.0 for the next generation SVT Mustang, which will most likely be boosted in some fashion, they will have to upgrade the rods.
I'm not saying that it needs Manley H-Beam rods or anything, but if they're no stronger than the current GT's rods then its power potential is no better than the 3v's until you tear into the bottomend as you can easily get a 3v GT to 450 whp which is about its safe limit B/F it starts breaking the interals. LS motor rods aren't expensive forged rods, but they'll hold upwards of 600 whp if I'm not mistaken.
Say if you can do head and cam mods to this new motor and make upwards of 500 whp thats great, but if the rods aren't up to the task then it doesn't matter, and that hurts the performance enthusiast who doesn't have the money to do a complete rebuild, and don't even think about any big shot. I mean look at an L. Its got alot of HP potential being a factory SC 5.4 car, but its stock rod hold it back.