Hell yes its a Ford product!! I always thought it was a shame that they never cast a FoMoCo into the diff housing so everyone could see it loud and proud under all those Holdens:s2: :s2: :s2:
The design however is a based on a seriously heavy duty Chrysler truck diff, called 'Dana 60' I think. Chrysler also slung it under the back of some awesome factory supercharged big block Dodge Challengers.
Ahhh XY Falcon you got me, a little research shows that the 1972 Dodge Challenger had a supercharger fitted as a 'dealer' option so technically not a factory car. :dead:
However so as not to lose face completely Ford produced 208 Paxton supercharged '57 Thunderbirds and the '66 GT350 could be optioned with a Paxton blower on the 289 which produced 446 hp using the factory 6-psi boost :s3 :s3 :s3
Oh, and I also noticed that that fabulous Ford 9 inch debuted on the '57 Fairlane
The 9" is slightly smaller and lighter then the Dana 60. Actually make that a bloody sight lighter! It is also slightly weaker but is the prefered way if you need a bullet proof diff in you street/track car. However check the diff in a new F350 if you can still blow a 9"!