Turblown 20B 3Rotor Lower Intake Manifold

This lower intake manifold comes with its own 8AN ORB fuel rail designed for 48mm grey top ID injectors( 14mm upper and lower o rings). 
Lower intake manifold is O-ringed at UIM flange,  no emissions ports(off road/compeition use only)
Equal length runners compared to the OEM, this greatly improves engine reliability and throttle response. Tapered runner design, with less internal restrictions, and gentler bends will also increase power. 
This unit is 40mm lower than the OEM LIM, to accomdate more hood clearance for engine swaps. This also shifts the powerband up slightly. Additionally secondary port runners are 8% larger for increase airflow. These will bolt to the OEM upper intake manifold( we do advise port matching the runners if using the OEM UIM; secondary runners only by 2mm). Mounting hardware/o-rings are included. This unit requires studs/nuts on the insider runners( supplied ).
Semi pport models are the same as our FD3S units( 25mm) 
If you have a stockport, bridgeport, or streetported engine you need the sideport model.