okay i know this has been covered and i've searched around and seen different things but it still doesnt clear my doubt. i have a gsr motor and my tranny went bad, in the process of sourcing anotha tranny i just wanted to make sure my tranny was gsr.. and its stamped "s80" wich in my research could be ls, jdm gsr, and also type R dont remember if usdm or jdm but yea. on the casing it has a black stamp "v4d" thats all i can see wich makes me think its some kind of lsd tranny, what do you guys think this tranny is? thanks.

 

V4D = GSR tranny

 

thank you very much sir.