I just recived my first nissan (it was free) and want to know some specs on the rear axel. What size is the ring gear and is there any options for a posi or locker? I am a ford nut and could quote parts on fords but i couldnt pass up a free car. the person that gave it to me said he couldnt get it to pass smog and told me if i can fix i can have it.

also what is the tranny gear ratios, manual 5 speed