The only surefire way to establish the ratio is to drop the rear cover and count the teeth- - - - -41 on the ring gear, 10 on the pinion. A photo of the front of the center section would be helpful, but it looks like it's the one you're looking for from the limited view available in your pictures.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!