Is 2003 Tacoma V 6 a free interference engine?

No, the 2003 Toyota Tacoma V6 (4.0L) is not an interference engine. It's a non-interference engine, meaning that if the timing belt breaks, the valves and pistons are less likely to collide and cause catastrophic damage. However, while less likely to bend valves, a broken timing belt will still cause significant engine damage and require a major repair.