Im pretty sure its a stock pump I will take a picture and post it later, I did have the pump out of the car and it pumped from the gas can out the other side of the pump. when I sucked on it on the car i got a taste nothing powerful, the outlet valve seems to be working fine like i said it takes very little pressure to open it, I dont think it can be backwards the wiring hook up is a T fitting and only goes in one way, I only got the pump apart to where I would have to uncrimp the casing to get inside, wasnt sure if that was a good idea or not, I did take off the intake cover that holds the four pins and spinner, that was stuck at first but is now spinning fine after cleaning. This is so frustrating because like I said the car started right up before the pump locked up from the debri out of the tank.