The 65-68 mustang fuel sending unit will not work. It has a single wire connection and the maverick has two connectors.
Trivial stuff, second wire on Maverick/Comet sender is ground... The Stang unit has to be grounded internally or it'd never work in it's intended application...
Thank you for posting this. I didn't want to shell out $85 for a mav one when for $25 a repro would work with 2 min on a dremmel.