This is a Crawford plenum and strut brace (stock strut brace doesn't fit). Excellent mod, good bang for the buck. The stock plenum slopes down in front, so the front 2 cylinders are starved for air. Crawford fixes that.
I paid the extra $200 to keep my stock plenum, when I bought the Crawford plenum. That way, I got my Crawford plenum faster. He just went out and bought a new plenum core and welded mine together.
In the grand scheme of things as it relates to how much money I have spent modding my Z, $200 isn't really that much. And I can put the car back to stock when it comes time to sell it.
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