I still have my stock LT1 block at my house.  I threw a connecting rod so the block got chipped on the #8 cylinder wall but if your building a 396 you'll have it machined anyways.  I'll be home in a week and a half if interested just let me know.  
E-mail 
guerardsgt@hotmail.com
Before I forget the block will cost you absolutly nothing it's free.  I'm going back stateside and will not be able to take it even if I wanted to so it's yours if you want it.