hey guys my friend just got some longtubes so he let his bbk shorties go for 40 dollars, so i picked them up, now my question to you is, is it worth it to put them on a pretty much stock car such as my own? i still have 2 high flow cats, would that be enough backpressure? i know eventually they'll go on but i wanna hear your thoughts on the subject, i've always heard that you'll lose low end torque on pretty much stock setups. thanks