99 coupe vs sedan muffler the same?

ive ask a similiar questoin beforebut would the 2.24 inlet from the axle back fit on to the 2.5 inch piping?

 

coupes and sedans use the same cat back systems... but lx/dx is different than ex/si

 

Correct, but I believe that the mufflers are the same all around. It's the B pipe that is different between the two.

 

well, at the worst, he can have the piping welded :dunno:

 

My bad, what I meant to say is that the B-pipes are different towards the front of the car, but both of them end up in the same spot in the back of the car and both of the flanges are the same. This way the same muffler will work on both vehicles. I hope that makes sense...