im going through a full rebuild as well.
how much did you spend? what are the specs on your head?
also why .40 over? is that not the max on these blocks? if you blow you have nothing left, correct?
as far as the turbo read these replies and check out this particular one.
http://www.extremepsi.com/store/cust...cat=426&page=1
this will be what im getting and my engine would be capable of so much more.