Big Block Chev 396-454 Head Bolt Kit Product_Tube Straightener 6 x M6 socket cap

6 x M6 socket cap screws (25mm UHL)

- Slip on compressor cover outlet (52mm)

Turbine Outlet Flange:  5-Bolt Subaru

Furthermore

For a clean cut

Big Block Chev 396-454 Head Bolt Kit Product_Tube Straightener 6 x M6 socket cap12 Point Head, Suit Aeroflow 320cc and Edelbrock Performer RPM Cylinder Heads, 8740 Grade Material. Aeroflow Performance head bolts greatly improve your cylinder head to block sealing compatibilities. This is important in engines with high power adders such as turbochargers, superchargers or nitrous. They can even be a great addition to a mildly modified build as insurance against failure. These head bolts are manufactured from aircraft quality 8740