Hedman Hedders 3 in. Gasket-Style Header Reducer w/O2 Bung For 2-1/4 in. Exhaust 21107 1999-gmc-sonoma-esi4960404 What material is the ALL920014

What material is the ALL920014 made from

"text": "The ALL11040 set includes three titanium-coated step drill bits

Will these headers work with my LS

Description_FAB Chrome Plated Steel Description_FAB Comes With Gasket Description_INV FUEL PUMP

Fits GM engine block to bellhousing dowel pin locations

Hedman Hedders 3 in. Gasket-Style Header Reducer w/O2 Bung For 2-1/4 in. Exhaust 21107 1999-gmc-sonoma-esi4960404 What material is the ALL9200143 in. 3 Bolt Flange O2 Header Reducers for 2 1 4 in. Exhaust System; 3 Bolt Triangular Flange Hedman Hedders 3 in. Gasket Style Header Reducer w O2 Bung For 2 1 4 in. Exhaust 21107 Specifications: Description_DEF [B@33910d46 Description_DES [B@3ab4eca1 Description_EXT [B@712b9dfb Description_FAB [B@53146bd5 Description_FAB [B@6854a7cc Description_FAB [B@75988f83 Description_FAB [B@5871108e Description_FAB [B@28cb8296 Description_INV [B@65ec2a84