GM RING & PINION H150 6:17 RATIO PART #3718100 - $150 (Sayler Park, Westside Cincy)

General Motors ring and pinion rear axle differential NEW OEM.
This might be H150 6:17 RATIO but I'm not sure.
Brand new original GM OEM part, not aftermarket.
I think this fits older 1950's through 1980's ???? Chevy heavy duty trucks.
If you know better what this fits please let me know so I can advertise it correctly.
I'd like to get $150, make offer, Call or text with questions show contact info anytime.
(5 one 3 7 six 3 99 one 9) 1950 1960 older vintage chevy ford trucks restored transmission transfer case drive train axle posi-traction