fuel tank sending unit

I own three Rangers, and have had to drop the fuel tanks in two. (that was enough!) For any future pump/sender replacement, from inside the bed, located the area where the unit is located, and carefully cut out an access hole to R&R without removing tank or bed. Went to junkyard and cut out a...

My 1988 Ranger has fuel gauge is acting up. It works until the tank is about half full then the gauge drops to empty. I know that Ford has discontinued the sending unit. I wanted to know if anyone had a fix for this or an aftermarket part that will fix it. There isn't a junk yard within 500...