Asked on the phone said it was 4 inch v band clamp was not
Wrong part

The Diamond Eye Performance Downpipe 220099 is designed for 2003-2007 Ford F-350/F-250 Super Duty. This component connects the turbocharger or engine outlet to the downstream exhaust system on the listed vehicle applications. Key listed details include 4 in primary diameter, Aluminized Steel, Downpipe.
Fitment Note: Confirm applicable emissions and sound regulations before installation. Confirm the exact vehicle configuration, manufacturer part number, pipe dimensions, and required installation hardware before ordering.