well a good way to test without dissassembling your transmission is to tell us what rpm’s and in what gears your car is at. for instance, if in 5th gear at 75 mph you’re at about 4000rpm++, you more than likely have a YS1 gsr transmission. What motor is this mated to?
yeah ask or email someone with a 92-93 gsr ask them what there rpm is in a certain gear and a certain speed and then see if you match that. You will know if it isnt a GSr tranny it will be very different