I have a muffler that I might put on my ride, a 94 DX coupe, but the muffler has a 2 1/2" end piece. I need to buy the right adapter to fit it onto the pipe, but I don't know what the right size is. I bought a 2 1/2 to 2" adapter. Could someone tell me what the right size is?

 

yea I am pretty sure that honda stock exaust is 2inches but I would measure it just in case.