ive got some bolts out of an r33 gtr manual,,,,, same????/ if they are let me know ill measure them... prob best to get them from nissan any way,,,, they will be the right tensile strength, we snapped 4 on 15 psi with a t88 and they were 8.8 tensile... so id stay with the nissan ones,,,, i thnk they are a 10.4 t/s.