OP, I've followed the thread you linked for a while. If I remember correctly, the person was toying with the idea of swapping in the s65 from the m3 or an n54 from the 335i but I think he never got to it or stopped updating. There's also this thread you may want to check out even though the person swapped in an N54 instead of an s65.
http://www.e90post.com/forums/showthread.php?t=454408
Edit* Saw you write about 2jz. Check this out
http://www.e90post.com/forums/showthread.php?t=649976