LS1 PowerPak F/T Piston Set 4.000 Bore speed Collector Reducer Extension - 3-1/2

Collector Reducer Extension - 3-1/2 in 3-Bolt Inlet to 3-1/2 in Outlet - 18 in Long - Gaskets / Hardware Included - Steel - Black Paint - Pair

Carburetor Inlet Fitting - Straight - 1/2-20 in Male to 3/8 in Hose Barb - Brass - Natural - Edelbrock 94 Series - Each

5 in Wide - 20 Degree Layback - Cover Included - Aluminum - Natural - Kit

25 in OD Countersunk Washers / Nuts - Aluminum / Steel - Natural - Set of 10

5 in ID - Plastic - Orange - Set of 4

LS1 PowerPak F/T Piston Set 4.000 Bore speed Collector Reducer Extension - 3-1/2Piston and Ring PowerPak Forged 4. 000 in Bore 1. 0 x 1. 0 x 2. 0 mm Ring Grooves Minus 5. 80 cc GM LS Series Kit