Doug's Headers - Exhaust Header Set - LS Swap GM F-Body 70-81 It protects the ECU input

It protects the ECU input from damaging flyback voltage which occurs when the transbrake is released

Crankshaft Pulley - Gilmer - 16 Tooth - 1

219 in Thick - Aluminum / Rubber - Blue Anodized - 7/32 in Wall 3 in Axle Tubes - Ford 9 in - Each

Coil Spring - Gold Series - Conventional - 5 in OD - 16 in Length - 150 lb/in Spring Rate - Rear - Steel - Gold Powder Coat - Each

Grease - Red N Tacky - Conventional - 14 oz Cartridge - Set of 10

Doug's Headers - Exhaust Header Set - LS Swap GM F-Body 70-81 It protects the ECU inputHeaders Mid 1. 875 in Primary 3 in Collector Gaskets Hardware Included Steel Black Paint GM LS Series GM F Body 1970 81 Pair