FYI we no longer sell race fuel.
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)