High-Silicon-Moly Ductile Cast Iron; Includes V-Band Clamps/ Flanges/ Heater Hose/ Heat Shield/ Header Bolts; Natural Finish; For Use With GM LS Engines Except LS7 And LS9 Engines; For Off-Road Race Use Only; Not For Use With GTO Starter Or Bellhousing; Removal Or Relocation Of OE A/C Compressor is Necessary