three on the tree to three on the floor conversion

Hey guys,
my 73 duster has the three on the tree shifter and I happen to have a original floor shifter complete with rods and all that I bought years ago but...
now I found out that the transmission tail lacks the mounting studs for it.
is there annything I can do?

and no finding a new transmission here in Belgium is next to impossible so thats not an option.
Thanks Alain