Once the floor s opened up you can connect the lever to the floor shifter and then the cable to the lever.
How to install aftermarket floor shifter.
B m floor shifter install in a 1999 gmc sierra classic 350 with a 4l60e.
How to install a b m shifter amazon affiliate link to b m shifter.
If not the floor will need to be modified.
If you are mounting the shifter on top of the floor you will need a slot in the floor for the quad arm to pass through.
Once you have the baseplate installed you can install the adjustable top mounting plate that the shifter attaches to.
For me it was easier to connect the cable to the lever first and then feed the lever up through the floor and bolt it to the mounted floor shifter.
Https amzn to 2mc2zag amazon affiliate link to b m 80675 starshifter automatic shifter h.
Simply install them at the required angles to fit your tunnel or floor.
The shifter is installed on the tunnel here which was then marked in order to cut a slot for the arm to pass through.