I just did a conversion but in a 72 Duster. Here is what I learned.....
There were 4 Dimples in the Floor for the Tracks. The Reinforcement Plates were nothing special and if you have minimal Fab Skills just make them. The original holes for the Bench just get Plugged. But I also used 72 Seats so there could be an issue there....
The Console/Shifter came out of a 904 Car and it all bolted up to my 727. There is a video somewhere on Youtube that a guy did with good measurements for bracket placement and it was spot on.
You should have 4 dimples in your floor for the seats but someone else will chime in that has the knowledge....