The question is in the title.

Do I :

1- Keep the mufold and put duallies exaust system
2-put headers and keep stock exaust

 

If you try to put a dual exhaust on your car, it is very likely that it will scrap on almost every single bump in the road you hit. The 3rd generation cars were not built to have dual exhaust on them. If it were me i would keep the manifolds and get a new exhaust (single back to the muffler and dual out the back). I have seen 3rd gens with dual dual exhaust but IMHO i don't think it's very road worthy. Just my 2 cents

 

Thanx for the comment but it look that I have enought space to passe another exaust line next toe the existing one no?