SBC Flat Top Piston Set 4.030 Bore -5cc 2014-audi-s6-esi6660461 Rear End Plug Kit -

Rear End Plug Kit - Hex Head - O-Ring Seal - Aluminum - Black Anodized - DMI / Winter Rear End - Kit

Crimp Collar - Race-Rite - Replacement - 16 AN - Aluminum - Black Anodized - Each

Seat and Cover - Prolite Advantage II - 16 in Wide - 20 Degree Layback - HANS Cut-Out - Black Velour Cover Included - Aluminum - Natural - Kit

They plug into Holley LSx plug and play main harnesses if one wants to replace factory LSx coils with Holley HP Smart Coils

1 in Extended Length - 1

SBC Flat Top Piston Set 4.030 Bore -5cc 2014-audi-s6-esi6660461 Rear End Plug Kit -Piston Standard Flat Top Forged 4. 030 in Bore 1 16 x 1 16 x 3 16 in Ring Grooves Minus 5. 00 cc Small Block Chevy Set of 8