"Other Items Required For Installation"

Installation does require the use of studs in exhaust flange area of your cylinder heads

(part#675003-12 required for both heads) along with 2 Long Exhaust Nuts #4041150

per manifold (4 Long Nuts required for both exhaust manifold installation).

The remainder of the studs can use normal 3/8" fine thread nuts to

finish the installation (8 required)