I think you've got the front half of a fwd pump bolted to the rear half of a 4age/4ac one (the rears are the same)
put a pic up of your actual setup.
The other point to note is that fwd pumps aren't meant to have a clutch fan bolted to them or the bearing shits itself, you didn't mention whether or not you had one, but I thought i'd put it up anyway.