Hooker BlackHeart has quickly become the leader in engine swaps and we are excited to announce new products for 82-04 GM S10/Sonoma trucks with LS engines. These 304 Stainless Steel Mid-Length Headers are designed to be used with Hooker BlackHeart Transmission Crossmembers (P/N 71222020HKR, 71222019HKR, or 71222018HKR) and Engine Mounts (P/N 71221029HKR) for a trouble free install.