L86 swap
Just bought a built l86 6.2l for my 2015 gmc Sierra.. these headers sound amazing with the cam the motor has. Very good quality product and sound is everything I hoped for and some!

Stainless Works Performance Connect Stainless Steel Headers Chevrolet Silverado / GMC Sierra 1500 5.3L / 6.2L 2014-18 Truck Headers from Stainless Works.
Increase performance and improve sound with Stainless Works 1500 truck headers. These headers are designed to fit Stainless Works Performance Connect exhausts for the Silverado which come with a variety of exit points. System features 1-7/8" diameter primary tubes and 3" diameter lead pipes. Made from 304 stainless steel and TIG welded, these headers are constructed with 3/8" thick flanges and come with 3" diameter slip fit collectors with merge spikes. Stainless Works headers are backed by a limited lifetime guarantee on material and workmanship and are made in the USA.
Designed to fit Chevrolet 1500 2WD | 4WD 5.3L and 6.2L Double Cab with Standard Box or Crew Cab with either Short Box or Standard Box.
2014-18 Chevy Silverado / GMC Sierra Headers. Fits SW performance connect true-dual exhausts. Designed to fit Chevy 1500 2WD/4WD 5.3L and 6.2L Double Cab with Standard Box or Crew Cab with either Short Box or Standard Box.Stainless Works headers are made in the USA and backed by a limited lifetime guarantee on material and workmanship.
Features:
NOT CARB-APPROVED. ILLEGAL TO USE OR INSTALL IN CALIFORNIA. IF YOU LIVE IN CA, WE CANNOT SHIP YOU THIS ITEM AND YOU WILL BE CHARGED A 10% CANCELLATION FEE IF YOU ORDER. PLEASE LOOK FOR OTHER PRODUCTS WITH CARB APPROVAL.