For use with angle or straight plug heads. Turbo location is re-located for better air filter clearance on 4″ inlet turbos. Must use custom 3″ downpipe. Includes larger T4 turbine inlet flange for tangential style housing with v band discharge Note: Requires Solid Motor Mounts, RPM Steering Shaft, and new lower water pump hose. 1 5/8″ 304ss primaries, 2.5″ X-Over.¬† Tig welded.