No GC8 sti came in 4.11, ever.
All STI GC8s were 4.444 with the exception of JDM V1/V2 STI which came with 3.9's.
The rear r160's were suretrack LSD's, (AU delivered, JDM non RA)
The rear r180's were mechanical 1 way LSD with DCCD, optional front 1 way LSD (JDM RA)

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Long live the WRC