I know about the measurements. I will double check them, but even then I don't think it will matter because there is play in anything to adjust the engine besides the tail shaft. I've had this car since high school and I am 24, I have never been in an accident, but there was rear 1/4 damage when I got the car, but it was very small, so in my opinion I doubt it was from that. My last set of flow tech headers fit just fine with plenty of space to the frame rail.