Thanks for the advise, I also have another question, I was talking to someone and they said I should get a high flow cat, would it be better to keep the stock cat or get the high flow, before I was just going to get the flowmaster 40 1 in 2 out, also how many cats does the 02 dakota 3.9 have and if I do decide to get high flow will I have to replace each stock cat with a high flow, I would really like some help on what to do, also what do you think about just gutting the stock cats ( and no there is no emissions where I live)