Ford Mustang 2017 Your exhaust is ready to be installed without welds or anything, only from the catalytic converters. Just remove the stock exhaust and this one will fit exactly in its place. - The MBRP exhaust system is custom-made with a double X-pipe, clean work for 1500 SAR, and I've made 4 exhaust tips for it, perfectly aligned. - For 2015-2017 models, you only need to buy a 4-tip diffuser for the rear bumper, just like I did (picture attached of the car with it installed). For 2018-2023 models, it installs directly. - The sound and tone are beautiful and enjoyable without being noisy or having drone. Message me and I'll send you videos of it running and revving. May Allah grant us and you success.