We have a Mopar Challenger HEMI cat-back kit available that fits the 5.7. Very clean, no issues, no welding. If you want to install it on a Charger, we can make an adapter and it will fit like the original. Original!!! Original!!! Original!!! We offer installation at the same location. Location: Al Khobar, Al Fawaziyah Industrial Area. To reach the location, type (كراج 392) or 392 GARAGE. ***Shipping available to all regions of the Kingdom*** For service, contact us via WhatsApp (phone number appears when you click the contact button).