Dodge 5.7 Hemi Block hugger. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. Starting with a CNC cut 3/8″ thick flanges into 1-3/4″ primaries with 2-1/2″ slip-fit collector. Rear dump header works well for street rod applications. and will also works in factory 60’s, 70’s muscle cars with 5.7L Hemi transplants. Headers are fully TIG welded and back purged. Mill finish, These, are TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA.