tonight i tried to fill the cavities with JB weld. It was very messy. The two cavities connect and I had JB weld running out. After taping off one side, it went well. It is hard to tell by the pictures but the cavities you see are on a totally different level than the actual intake runners. I am a little nervous about the temp getting too high, but JB Weld says its good for up to 600deg. So, we'll see.
