converting 3 on the tree

im getting a 64 valiant v200 conv and wanted to swap it to a floor shift 3 speed how hard would this be? is it as simple as cutting a hole or something else

I did this, basically I swapped out my steering column for a non column shift steering column.
I did put a new trans in so the linkage was not used..but you would delete that to and then i made a nice bracket for the floor shifter and bolted it down. Cut a hole for my Shifter cable and That's it.