studs gone or broken off into head?? turbo manifold warped.. popped the non turbo studs/hardware you had installed is my guess.. na vs turbo the washers/studs and nuts are different.. and much more spendy..
You need to be sure to use the special extra-thick washers. Assuming you *did* use them, then the next step would be to triangulate the turbo to the block.
...BTW your Bieber avatar is awesome.-Malone
Locking washers are your friend. I had this problem in the worst sense possible. My entire IP bracket came off while i was driving almost causing catastrophic valve to piston collision. I replaced as much hardware as i could get my greasy mits on and put locking washers on EVERYTHING. no more loose bolts!