EMPI now offers an 1-5/8in merged competition header system for use with special 1-1/2in flanged racing heater boxes. (P/N 01-95-3028-B; 01-55-3028; 01-95-3029-B; 01-55-3029) This enables you to have a defroster/heater system and still have a high performance merged exhaust system. Header features this heavy duty glanges with ground flat gasket surfaces. All internal welds are ground for true high flow performance. Headers are supplied with an EMPI swivel flange racing stinger. Heater boxes have lightweight inner coils to still generate good heater output while 1-1/2in tubing allows for less constriction on your high performance motor. Header system is provided with stinger. Then choose from heater boxes or 1-5/8in J-tubes (P/N 3422; 55-3422) to complete your installation. In addition you can use the hideaway muffler or PHAT Boy to get to and from the track. Type 1 only. Header and stinger only.