i bought the OBX longtubes with no cats when i finished my built motor. they fit perfectly and i had no issues other than the clamps were junk. I took mine to the local muffler shop and had them welded up for like $75. I used ford OEM gaskets with the stage 8 header bolts but ididnt use the locks. I have no leaks at all on mine. yea they are cheap and here problems of backpressure but hell first pass on mine i spun the AR bajas in the tire and cut a 1.63 60ft and went 7.28 at 95mph on street tune. the only weight reduction i have is no spare tire, no hitch , no front sway bar and i snatched all the heat shields out.
