Generator Mount And Blade My 1972 Pinto Has A Bad Altenator I Want To Replace It With A Vortex Generator Will That Increase My Mpg?

My 1972 pinto has a bad altenator i want to replace it with a vortex generator will that increase my mpg? - generator mount and blade

I was told that a vortex generator my fuel consumption would increase by 50%. they are much more easily and with no moving parts ..... Also, if anyone conversion chart room number for military SAE holders for bottles for Jato 1972 Ford Pinto?