This is the big one! Very rare! 3" butterfly Hilborn Fuel Injection for a BBC. It is for the square port heads. It came off a std. deck engine. The nozzles are #22 and the barrel is a #56. The fuel pump is a Hilborn PG-150-1. There are some arms and hex linkage parts with it. It also comes with K&N filters if you want them (not pictured). The injection is missing the one arm for the cross bar. As with all injectors that have been sitting, the o-rings should be replaced.