I was checking out the correct way via the AIM to mount my floor shifter to the tunnel after purchasing a second hand factory shifter. In my AIM, the picture shows it being held down with 3 bolts. My shifter has 4 mounting holes. I noticed in the 69 AIM it's held down with 4 bolts. Is my shifter wrong for 68 or was the same shifter mounted differently between both years.