TF 904 New Oil Pan Question

Thank you folks! Hmm I searched slantsix.org. /6DAN said that a 63 TF had no internal filter, so has mine only an outside line filter. And I have a replacemet for it. So I should built in an additional pan filter? Like described in http://www.slantsix.org/forum/viewtopic.php?t=31863 ? Or may I only change the stock pan with that one I got, without any modifications? If so, any idea how much additional fluid it will need, or should I just try by the dipstick? Sorry I am absolutely new to transmissions.