My car currently has bbk equal lengths, o/r h-pipe, and 2 chamber flowmasters. I am thinking of changing to dynomax 1 5/8 long tubes with 3" collectors, 3" dr gas o/r x -pipe, and keep my flowmasters. Would this be a good upgrade or should I stay with what I have? The only other performace mods my car has is 3:73's.