i searched around but wasn't getting for sure answers =/ or i just suck at searching

i am planning to do my exhaust soon and what is the size of my stock pipings? i want to know the size of the 2 pipings before it is turned to 1.
is it a 2 1/4'' or 2.5'' to a 3'' pipe?

Thanks!

i believe its 2.25" into 2.75" ( measured my last night, enroute of making custom exhaust again ) M272 2.5L motor.

f'sho thanks mang! i'm thinking of doing a custom exhaust setup soon so i'm trying to gather some info