Hey, this just came to me. I was told that 4.1 N/A blocks were too weak to support the GN induction package (is there any truth to this?). If so, wouldn't all of us benefit from the use of Hard Blok in the water jackets (up to the freeze plugs only) to strengthen the block? I figure it should hold up well, considering that our blocks, just like the Hemi, have deep skirts that go below the crank, unlike the small or even big block Chevy. Has anyone tried this?