Quick Question: TFI Modules for Manual/Auto and Dizzy #

I posted this over at Corral first, but I figured I would post here to maybe get more/different answers:

OK, got a little thing going on here.

I'm trying to replace my TFI Module and went to Advance Auto to get one.

The only one listed for my car(90 GT) was for an Automatic.

So the guy looked up a '91 GT and it came up with one for a Manual.

The Part number for my Dizzy starts with E4ZE and that wasn't listed in the distributor types of the module for either one.

So...whats the difference between an Auto and Manual TFI Module. And is there a difference between a 90 and 91 module?

Right now I have a '91 manual module in my hands....but can't figure out why my E4ZE isn't listed anywhere.

Anyone?

Thanks guys, that helped a lot. I'm still wondering why I have a E4ZE distributor that I can't seem to find any record of