My boy has a tranny thats a so called itr tranny the vins say s80 but the green tag isnt there and i look through the whole where the axles go and theres that bar that is there is this a itr or gsr or ls lmk asap

 

i dont think it is .

 

It's definitely not an LSD Tranny. Chances of them swapping out the differential to a non-LSD one on an ITR tranny are low, but hey someone might be dumb enough.

It's more than likely an LS, but can also be a B16 or GSR Tranny. Take it apart and count the teeth on the ring gear.

If it's missing the VIN Tag chances are it's also stolen, buy at your own risk. Don't support thieves.