Carnut...
I'm looking at a CAD drawing of the tank right now, dated 2/94 with the pickup in the center. Yours must have come just before.
All ERA tanks have two longitudinal baffles. One-way doors were also added in '94. A third transverse baffle was added a few years ago.
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HSSS,
Another possibility for a new fitting:
Use a bulkhead fitting that's been modified to a barb on one end to take a hose. Drill a new hole in the top of the tank.
Somehow

feed the fitting and hose in through the fuel sender hole and out the new hole. Secure with a nut on the outside. I would use an O-ring to seal the inside surface, a nylon washer and some serious goop on the outside. You will be left with a male AN thread on the outside to connect with your new feed hose.