Mock the seat into position
Here, I’ve got the bottom of the custom Tack upholstered WiseGuys seat removed to show the blocks I put under the seat frame. This is how the seat is positioned to give the most support under the thighs, while still allowing my dad to be able to get out of the car without commissioning a bystander to pull him out. Now that the seat is in the correct position (front-to-back & side-to-side), we can move on to exactly how to attach the seat to the floor.
Choosing the mounting location
I believe the hole in the plate going from front to back is for the slider on the WiseGuys seat, which we won’t be using. We want the seat as close to the floor as possible, mainly for head room. I will be using the lower shaded circle for the mounting brackets.