The Corbeau Plymouth Barracuda seat brackets are manufactured to be a direct bolt in to the 1965-1969 Plymouth Barracuda. Direct bolt in means your bracket will bolt to the existing bolt holes in your floor board with little to no modifications. Between 1965 and 1969 there were multiple floor pans used. Please measure the bolt pattern on your floor board to help ensure that you receive the correct brackets. Once you have your measurements please give us a call direct at 801-255-3737 to place your order. Corbeau Plymouth seat brackets are powder coated in a black wrinkle finish and come standard with single locking sliders. Single locking sliders have a handle on the locking side that you pull to the side to slide your seat forward and back. You can upgrade to a double locking slider for an additional fee. Double locking sliders have a bar that connects the two locking sliders and you pull up on this bar to slide your seat forward and back. If you do high stress driving of any kind we recommend a double locking slider.