(1) should be a stud in the block The other two are bolts.
I've never seen a loose stud like that, but I guess it could happen, or maybe it was never there to begin with (when the motor was built) and the other two bolts worked themselves loose.
1G DSM: 1000+ AWHP, 9.2@162.83 MPH Evo X: 746 AWHP, XR9569S pump gas www.dynotuneracing.com