first of all i dont have a lightning ive got the boss with the L swap..anyways..ive been through 4 thrush mufflers i broke the exterior welds somehow..so i switched to the 3" dual inlet dual outlet ultra flo x muffler..ive broke 2 now..the exterior weld down the middle of the muffler blew open..i have longtubes and no cats full 3" exhaust...WHY DO I KEEP BREAKING MUFFLERS?????