what kind of rear I have? the car origionally had a 305tpi and the only #'s i could get off the rear end was on the middle housing. I remember that the car felt like it had a posi in it but now it is worn and i need to know what i have so i can fix it.
Thanks


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Red 87'Z-28 350 tpi,MSD ignition 6al,gutted maf and airbox,
700r4 w/b&m shift kit and cor. servo

you have a 10 bolt, pull the cover and see if you have posi is the best way to know if you have posi for sure. you can look at the rpo # posi is g80, but that doesn't mean you still have a posi.

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ICON Motorsports

1st & 3rd

Okay where do i find the rpo #? and then on a averahe what should the labor be for rebuilding the posi and changing the gears?

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Red 87'Z-28 350 tpi,MSD ignition 6al,gutted maf and airbox,
700r4 w/b&m shift kit and cor. servo

your rpo codes are located inside of your center console glovebox on the side. i'm not sure about your other question.