You must replace the two factory front cross members, it also comes with machined dom sleeves for the steering box and hardware. The item "Rob Bonney Fab 73-87 K10 K20 Chevy 6BT Cummins Conversion frame boxing sets" is in sale since Monday, January 09, 2017.
This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Motor Mounts". The seller is "robbonneyfabrication" and is located in Peoria, Arizona. This item can be shipped worldwide.