60-1teg

The trans i bought from a friend has no vin plate because it is a new case so no vin. The sticker that says s80 or what ever has fell off so no sticker but he said it came from a 2000 si b16 it had a single bend si looking shifter and linkage on it .
The only marking that is on the tranny is a black looking stamp that says S4 stamped sideways. Is there any more ways to tell if it is a b16 from 2000 si?