Hey I have a question for you guys that replaced the 2F FJ60 exhaust manifolds with a 3FE exhaust manifolds Did it change the drive ability around town on the freeway or increased or decrease the low end torque for 4 wheeling did it help with any more power or gas mileage?? Thanks I'm just getting ready to change mine to the 3FE manifolds and was just curious, thanks for the Answers