Didn't think there would be many of these on Oppo.

Mine is a M923A1 and has the 14.0L Cummins (non-turbo) instead of the 8.3 turbo like macanamera's. Engine stats: Cummins NHC 250 855 cu in (14.0 L) naturally aspirated diesel engine, producing 240 hp (180 kW) at 2100rpm and 685 lbfft (929 Nm) at 1500rpm.

Juuuuust fits.