If there was no govenor I'd assume the infinity. I say that because the Brougham is soo heavy itd need 3.73 gears to even keep up with the acceleration of the infiniti @ a cost to top speed maybee.
Then again those jap. cars seem rev up to the sky but American torque comes in at alot lower RPM. But I dont know for sure what the gearing is in the V8 infinitis. My 1988 Brougham has a 2.56 rear end which is NOT made for hard acceleration.