don't center it if your 96 has the shallow pan like my 94 . it will press tight against the filter and will not drain out when you go to change the fluid. i centered it on my 01 pan which is a little deeper and it was fine. i now have the mag hytek double deep pan on the 01 so when i get around to it i will put the old 01 pan on the 94.
the rear corner on the passenger side looks like the best place to install the plug in the shallow pan.