Many don't like the sounds of this, but to be perfectly honest, on any mild small block, the factory cast intake is so hard to beat. I did intake test on several small blocks, including the 318 in my Duster. The absolute best ET slip on my 318 Duster was given by a factory cast intake of the 3 intakes tried (the dual quad intake hasn't been down the track yet). Also, on my 360 Duster (at the time, basically stock 360), I went from the Action Plus to the Eddy RPM and didn't even get a full tenth.
