Nice one! GN's and TTA's around here are alot of money because they are getting less and less people selling and more people holding on, the ones that are for sale are the best of the best usually and are asking top dollar.
I have seen a TTA up close and those engines are just way different that the normal v8 small blocks I am use to working on. Those TTA are just do darn quick with little mods, boost is great!!