just rearward of the front wheel you look under the car and see two big long things, one on each side of the car. those are 2 of the catalytic converters. there are 2 more "pre-cats" further up on the pipe
2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'