65 Barracuda carpeting question...

Bought the carpet for the 66 "S" in 1987 from ACC . Back area was not available , carpet by shifter was not available. They do have good quality and when one set was cut too narrow they sent another right away and did not want the other set back. All of the ACC carpet I have installed you cut for the floor shifter so with the 3 sp you should not have any problem.