if your going to start modding your 3.8 then just start with a good exhaust that you won`t have to upgrade in the future to handle more hp. the factory y pipes are extremely restrictive and it is better to replace them instead of going with a catback system designed to bolt to the 3.8`s y-pipe
i Reccomend MAC exhaust the MAC h-pipes will bolt right to your factory headers. here are part numbers
MAC catalytic h-pipe part#C38200 $399.50
MAC offroad h-pipe part#34020 $169.50
the correct cat back that will bolt to the h-pipes is
MAC 98-03 4.6l v8 catback part# TK2298 $299.50
i know the catback is designed for the 4.6 but MAC V6 h-pipes are designed to be used with their v8 catbacks.
the only other things you will need is a muffler hanger bracket and tailpipe hanger from the same year as yours 4.6
you will have to hang the tailpipes lower to clear your rear bumper or order a v8 rear bumper from
www.stangparts.com for $125.00
go to their product inventory then go to bumpers section
they also sell a dual exhaust conversion using GT takeoffs and an adapter to the v6 exhaust and v8 rear bumper for $369.00 also in the bumpers section
if you are tight on money and major mods are not going to be added the dual conversion from stangparts is the way i`d go. but if more mods are on the menu then do yourself a favor and just go with the MAC system. it will add more power to your 6 than any catback designed to bolt to the factory Y-pipe
i hope this helps
...sorry to those that have them they sound and perform like crap.
