This is the intake I am using on my motorhome project. So far ... I like what I have experienced but because of the gearing(4.56) .. the motor is singing about 3200. When I eventually get a shorter(3.73) gear ... I will probably try an SP2P.

That "blockage" in the four-corners of the carb opening? .. that HAD to be designed in-there. I think the intake was designed MORE FOR a fuel-econ HP application. Now if you removed those "corners" .. it would probably be a better higher RPM piece.

I was meaning to get a couple of older magazines to get their "tests" on these intakes .. but no luck so far. I called Eddy some years back and asked them some basic tech-data on these two intakes .. they were of ZERO assistance.