yesterday i put the car on a lift in my dads shop and saw 2 screw plugs (bout 30 mm diam with a square socket in the middle) Im guessing that to change the fluid on the r154 you remove the lower one? but where do you pour the new fluid in? i heard of people on supraforums saying you pour through the shifter hole...is this true?

Confucious says "Man who screw car muffler have hot rod"

There is another plug on the side of the tranny that is the fill plug.

It is much easier to remove the shifter and fill the tranny by pouring the gear lube there, but you still need to remove the fill plug so you don't overfill the tranny.