Using

Leonel's brow furrowed as his mind spun. At the same time, his fingers stretched in odd positions, moving them like individual striking snakes. 

His First Node was with his brain stem. His Second and Third Nodes were along his spine. His Fourth and Fifth Nodes were fused into the walls of his lungs. According to his current plan, his Sixth Node would be fused into his stomach. The Seventh and Eighth Nodes would be split between the chambers controlling the outgoing flow of his blood and the ingoing flow. 

Up to this point, this arrangement had a near 100% compatibility with him and he felt that it was near flawless. Yet, no matter how hard he tried, he couldn't find a Ninth Node with as much compatibility with him.