Highly doubtful. Blakey's dog and pony show at the HSCA in the 70's was to steer away any scrutiny on the actual conspirators. At the most a disposable mechanic or two was used. The reason that mob inclusion is always part the JFK conspiracy tales is due to the close relationships of MOB ,anti-Castro and CIA(some of these actors were involved).Remember that the Warren Commission had no clue that the CIA/MOB were in cahoots to assassinate "The Beard". There are however scores of conspiracy theories that include Roselli along with Nicoletti and his driver at the time James Sutton aka Jimmy Files. Those theories have since been debunked.