The Cat Back Exhaust system will bolt up to the catalytic converter extension pipe with no modifications needed. However, in order to remove the existing exhaust, cutting the over the axle pipe just to the rear of the axle will be required (unless you feel brave enough to lower the rear axle).
The system uses clamps, no welding is required. For your convenience, I will include a link to the installation instructions. You can find the link below. view full answer...