Classic Instruments fuel link interface??

[Coach]

Anyone have any experience with this Classic Instrument fuel link interface (part #SN34)?? My truck has a 65' Ford Mustang gas tank under the bed (bought the truck truck that way, not my doing) and the fuel sending unit is 75-10 ohms. It is not compatible with my original fuel gauge in the dash or aftermarket Bosch gauge I bought (0-90 ohms). To change the fuel sending unit, I would have to remove the bed . Apparently this part can interface with all types of sending units and gauges, making the proper conversion so you can see the correct fuel level. Any thoughts would be appreciated, thanks.