Just thought i will update this thread... Gosh it's been a while.
Well the good news is it's almost done, should fire up this week.
bad news is i didn't go with the s62. there are many aspects that had me away from using a BMW engine as a swap but mainly there are no qualified people who can carry this swap successfully arround us here in the middle east.
i ended up going for a 4G63 swap because the shop doing it is very experienced
you can see most of the pictures here.
http://e30m3b-spec.blogspot.com