AFR Cylinder Head Set 2101-1 ; Magnum Rectangle Port 325cc Alum 121cc for BBC

Capable of flowing 390 CFM at 0.700" of lift. Cylinder Head Assembly Series:Magnum Rectangle Port. Port Style:Rectangular. Notes:Fully CNC Chamber. raised exhaust port. SCE Intake Gasket Set 213102; Accu-Seal Pro Rect Port 2.54 x 1.78 in.