Vintage SBF aluminum 4 barrel, single plane intake
Fits spread bore or standard Holley carbs.
I purchased it new for my car in the late 70's.
Port matched (Felpro 1250 intake gasket), and runners equalized (as good as you can) on flow bench.
All surfaces smoothed, stainless steel shot peened (closes pores in the aluminum), treated with PPG DX 501 metal conditioner.
Excellent condition