Hmmm, H-beam rods presumably forged, 8 cylinders of course, I don't see any oil return tube holes, a large oil gallery running along the bottom of the case, dual v-belt pulley, strange color to the casting (a different alloy perhaps?), no return housing on top, part number begins with 908, a few other thing look odd but I can't put my finger on them.
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1966 912 converted to 3.0 and IROC body SOLD unfortunately
1986 Ford F350 Crew Cab 7.3 IDI diesel, Banks Sidewinder turbo, ZF5 5spd, 4WD Dana 60 king pin front, DRW, pintle hook and receiver hitch, all steel flat bed with gooseneck hidden hitch. Awesome towing capacity!