If you are looking for a pump system that will hold up to dispensing ethanol, I would say use Tokheim.
But an update will be needed for the meter so it has the stainless cylinders and teflon piston cups....898-k Tokheim meter is what you will need.
Wayne 2 piston meters #4, #5, have roller bearings and teflon cups and stanless sleeves.
You could use the best of different manufacurers components and build a frankenstein guts system.
As far as I know ethanol is water soluable so there could be rusting issues if there is not daily usage.
A Bowser pumping unit is about the smallest I know of and would have the smallest area internally to try to rust. The Wayne METER is aluminum and stainless and is the smallest, so you could have lots of room, a bowser or G&B air eliminator could be used.....since a BENNETT 76 computer uses the "LEG" mounts under the computer, a modern computer will bolt up w/ no modification.
The sight glasses will probably need to be omitted by LAW.
More than likely a 2 part face would have to be made since crankbacks and later 2000 models have different heads and faces will not interchange.
A later computer face and a part over and around it like picture mat.
Then there will still be an issue of controll ....how is the computer going to be reset
Veeder Root makes an electric reset but there will have to be a way to shut off power to deter theft.
You would have to have a switch on the lever under the nozzle to energize the electric reset, and use the crank to turn reset on & off....up or down for open and close circuit.
There is a biz in Cartersville that can supply you with a rebuilt, calibrated meter.