SB...If you are talking about the steering wheel lock/ignition switch assembly, Nissan refers to them as SOP - Lockset Steering:
Model Year:1989-1994 ALL - Part # 48700-40F861995-1998 Auto transmission - Part # 48700-72F251995-1998 Manual transmission - Part # 48700-73F25 price $134.00 (as of March 2003)
Removal of the damaged steering wheel lock/ignition switch requires that you drill out the anti-tamper bolts that hold the steering wheel lock/ignition switch assembly to the steering column. Not that difficult to do, but may require the use of a bolt drill-out extractor set.
http://www.handsontools.com/st...=8242Once you remove the two anti-tamper bolts the steering wheel lock/ignition switch assembly will literally fall off the steering column. Replacement is a matter of properly positioning the new replacement unit in & hand tightening the bolts up. Make sure you test the fit PRIOR to torquing down the anti-tamper bolts. Once you snap the heads off those anti-tamper bolts, you wont' be able to remove or readjust the /steering lock/ignition switch assembly.Anyhow, hope this helps...Good luck!!ID95 240SX SE
PS:If you decide not to replace the steering wheel lock/ignition switch assembly, then give your local locksmith a call. He might be able to repair/replace the lock assembly for less.