status....

Just finished installing another motor into my car and after about 30 mins of idling and checking for problems i noticed a huge amount of atf leaking out from what looked like between the motor and trans. I reused my trans, converter and flex plate since the motor came out of an is300 and everything looked to have gone in fine. Once the car was warmed up we shifted thru the gears and seemed like everything was ok til we noticed a puddle forming under the car. Idk if i could have damaged the seal of the torque converter or pump seal on the trans somehow but just looking to se if anyone has had this problem before or any ideas or suggestions for when i go to pull the trans this weekend