I had a little trouble with mine. Bought from YO a few years back. Had to elongate a hole or 2... and there was a radius I had to cut down for a bolt/washer to seat flat. Also, at the outlets where the headpipes mount were not the smoothest surfaces. In fact, there were good sized ridges where it looked like the mold halves came together. Maybe YO sold me "seconds" or rejects. As far as fitting in the car, no issues.