there also another coming out soon worth looking into. It gains .75" of flow area over stock. Should help nicely to get some good air to those back cylinders.
They will be selling soon for a very low, competitive price. If anyone is interested, send me a PM as I'm not sure if they're ready to be contacted about them
edit: sorry I had to remove them as they aren't ready to be advertised. They are really cool though and definitely should be taken into consideration over the tunnel ram.