Ive browsed for awhile on the web and so far so good. Apparantly the new 6spd manual is actually a few pds lighter than the 5spd it replaces. At this point it seems as though it shouldnt be much more weight than the '10 which is GREAT news. Now if they could offer an LX 5.0 weighing a few hundred pds less, that would be even GREATER! Wishful thinking i know, but im not complaining.
It shouldn't go up that much. They need to stay competitive with the camaro and challenger. They've already been losing market to the camaro since it came out.
I believe they should weigh close to the current s-197's since they are on the same chassis. Since the compression allows for high N/A numbers the boost levels will have to be kept low. But since they already start out with over 400 you will not need much boost to get a lot of power.