It is a Floor Shift, pic includedI also had to add 1" spacers to the rear of the shifter base. I used pieces of square tubing to raise the rear of the shifter to make it level.
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Is there a floor shifter in the car currently, or is a column shift car?
If there's a factory floor shift in the car, you could generally use the existing shift mounting bracket to mount the aftermarket shifter. It's quite straight forward.