Power??

Hey guys,

Well i bought my '71 240Z bout 2 or 3 months ago, The guy i bought it from was a 240Z car fanantic. He gave us a complete parts car, and some almost new headers (they were for dual exhaust. Also he gave us an engine that had preformance camshafts in it. It has a four barrell carburetor on it too. Say i get the engine workin again, around how much horse power increase would i have from the normal L24?? I would really apretiate it.

Thanks, JD