i know there's these rocker things for lifters on muscle cars that kinda acts like vtec. it rocks between 3 positions to change the valve timing basically(like vtec does) no clue if they make it for over head cams, but it wouldnt suprise me. chances are, he's talking outta his ass though....closest thing to that i've heard of for our cars is the i-VTEC that comes on 7thgen civics and same year level hondas-acuras...this is infinitly variable, or within reason....its basically vtec when you want/need it instead of over 4500 rpm