1965 273 alternator brackets

I'm doing an EFI conversion on a '65 Dart GT convertible. I was going to convert to a GM CS alternator but realized it has the old pump and pulley setup. I'll go with a replacement OE style alternator but the lower bracket (slide) is a hacked up piece. I'll buy the the set up with hardware if needed. The upper mount I have is pictured

alt bracket.jpgPaying by PP G&S, thanks