I have a been saving up to buy some long tube headers and for the price range and quality I have narrowed it down to these two. I am looking for the best sound, horspower without dyno tune and with, problems, fitment and if the OBX have some with cats, because I have seen some but other forums said they don't. How have yours worked for you and mostly the power gains/butt dyno.
I also have a L99 with, flowmaster outlaw axleback, vmax ported throttle body vararam intake, and diablo intune.
