It would seem to me the auto' would be more pricey too. I think the AFM in the L99 would have something to do with that since it sounds more complex than the LS3, valvetrain-wise. I'm sure it'll be underrated and under tuned. I'm sure getting rid of the TM would help a lot. I can tell you the difference in my car with the TM on and with it off were litterally night and day.
"...What IS true: We anticipated that this would happen - we are never finished - and yes, Ford DOES deserve to win now and then. To think that GM can come out with a car to make ford throw in the towel is simply foolhardy..." - fbodfather