I know there was some discussion in the past whether the CNT racing test pipes would fit on the V8 sedans or not, well I answered that question this week. Absolute perfect fit, sound great, and the fit and finish is excellent. I did not however use the hardware that comes with the pipes. I used 1/2"-13 x 1 3/4" long stainless steel bolts, with flats, locks, and brass nuts . The half inch bolts fit perfectly in the holes of everything involved and helps to keep everything centered perfectly. Now we know.