just replace broken part and upgrade it 1 size while you are there. cut it flush, drill it out, hammer a funnel shape into hole that fits the new size pipe, then solder/braze new piece in.
Just goto Pick-a-Part and grab one out of a lancer sedan - I doubt they'd be different. It only costs you $1 to get in and if you take your old one in you can compare to see if it suits.