Not Ranked
Our 870 4150 and this 1050 4500 are built to our spec by AED and they are beautifully done. These idle on our dyno at 1000 RPM and has a seamless transition. Much the same as the 1308CFM quads on my FE, which has very nearly the same duration and slightly less lift. Also 33 less cubic inches.
It's as streetable as mine, which is my point.
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