Took this from the KB block post. From Ray Barton...

Ray Barton Racing Engines has a magnesium CrossRam intake on our website (see link below) that can support over 1000HP. It doesn't make anymore peak HP than a big, open plenum, single four barrel with a big carb. However, it makes a ton more low and midrange torque which is beneficial for heavy or automatic transmission vehicles. Also the RBRE or the newer Mopar manifold can be real animals with good drivability if the carbs are reworked properly. All of the newer Holleys for these manifolds are no good out of the box but can be corrected. -- Ray

http://raybarton.com/parts/index.php/par...ossram-manifold