Great job, congrats.
But anyway OP like previously stated, K20a.org and also ClubRSX.com will have what you need. If you stick with the ITB idea, steer away from the common TWM units and look into Jenvey, Hayward Performance, Kinsler and Clockwise Motion. ITB’s will benefit greatly from a built motor… so don’t go wasting your money on them if you don’t plan on a built up motor set-up.