(I just realized I'm a moron lol) If you jacked up your PASSENGER SIDE, your transmission will take more oil than it ordinarily would, so leave the fill plug out when you put it back on all fours, and let it drain out the excess. However you did the driver side so I suppose you might have less oil than max. With my Z, that was the easiest route for access to the plug, as it is on the right side of the car. For a Z, I found the easiest way to fill is just run the hose through the engine compartment, then use a funnel to feed the fluid. (I just did this a day or two ago lol)