Thanks for the response.
In order to drop the pan I had to remove the rear transmission cross support. I broke off two of the bolts on one side (M12X1.25); I tapped the one broken bolt with a hammer to try to loosen it up (after spraying copious amounts of penetrant on it) and the whole thing popped up into the bracket!
As you can see, the bracket is completely boxed in so I couldn't access the inside to remove and replace the loose nut. So I moved onto the transmission pan and filter. I was able to drop the pan and change the filter; I went ahead and filled the pan up before replacing it...even with a buddy helping it made a mess!
Last night I had to cut a hole in the side of the bracket in order to remove the loose nut and install a couple of homemade "nuts" (I knocked out the other broken bolt). I'm waiting on a M12 x 1.25 tap to chase the threads in the other holes and to thread my new homemade nuts, then I'll reinstall the cross member and top off the tranny fluid.
After that I'll start the engine and top off the fluid level with the tranny in Park.
Do I need to cycle through the gears at this point and continue to add fluid as needed?
Thanks.