i have flowmaster super 44's on my car and im getting ready to order a UPR o/r x pipe. I have a 1998 mustang gt. my question is do i need o2 extenisons for the o/r x? and also do you guys think the o/r x will sound good with the super 44's? thanks for any help in advance

 

I don't think so, you only need them when you put on LT headers due to the additional length. Your o2 ports should be in the same spot as if you had cats.

 

alright thats wat i thought thanks