A44DL is a 4 speed auto transmission used in the 2WD van from 84 - 86. A45DL is pretty much the exact transmission (except used in 87 - 89 2WD vans). There may be slight internal differences, but no change in bell housing, splines, or anything else that would affect interchange (even the gear ratios are the same). So as far as I'm concerned, other than age, they are the same transmission. The reason I said the seller might be a little confused is because he could be listing for 84-89 Toyota vans (along with some other makes & models). Of course his very limited application list is good for those of us that know about this (as other potential buyers may not be able to find his listings). He has another listing for
"87-88 Toyota Van Automatic Transmission, A/T Model A44DL, 2.2L" (he's asking a little more $$$ for that one). Tim