I have a obd 1 Gsr swap in my EK and I have noticed it is leaking oil. It looked like the oilpan was leaking, but I have changed it already and its still leaking. I have check just abput every gasket on the top end, but I just can't seemed to find it. I notice from under the car that it is leaking down near where the tranny bolts to the block. Maybe rear main seal leaking?? I hope not!!