Ah, what he meant by entire assembly was it comes with the throttle body, injectors, etc. You would still need adapter plates for the pi intake to fit with non-pi heads. Or you could do the RTV method ...still need some additional parts too. You could probably just buy a new PI manifold though for $190 and use your other parts that you already have if that is what you want to do. But yes, when its all done you will pick up around 20 horses with just the pi-intake. Well worth it in my opinion. Afterall, the non-pi intake is what really kills the car - can't breathe once you get above 4k rpms, and the pi-intake helps out significantly there.