Does anyone know the size of the opening on the y pipe when it bolts to the stock cat section? I thought it was 3" but apparently trubendz believes it's 2.5". Which is it?

Thanks,
Chris

1999 3.0L Cougar: 220fwhp and 200tq 2003 VW Passat W8 with 4 Motion AWD http://www.cardomain.com/ride/300644 PM for intrest in 3L SVT Contours, 3L swaps into your current car, Prepped 3L engines, or anything 3L related.