If your N/A the research ive found on the zetec says go 2.25 single exhaust. With High flow cat, flex pipe. Or if race header no cat.

95 Tour ATX Zetec EGR Block OFF Polished TB Polishe Vavle cover Energy suspension Greaseable sway bar bushings Front and rear Red interior lights 1/2 done Home made short ram intake Custom Grills Watch this space grow