350 Turbo vs 700r transmission shifter questions

[buildinga55]

My truck came as a pile of parts. It came with a 350 engine and 350 turbo and a Lokar shifter that mounts on the top of the 350 turbo transmission. I have a couple of questions. I have ran across a 700r transmission I can get for trading some old stuff I am not using. If I were to put the 700R in, would the holes already in the floor pan line up the same as the 350 turbo as the holes are already cut for the 350 turbo? Also, is there anyway to modify the Lokar shifter to work on the overdrive transmission or would I have to buy a new shifter? Thanks