* Add 1 Part 3001 Blue Brick 2 x 4 (Alternate) (match ID 3)
* Add 2 Part 3001 Red Brick 2 x 4 (Alternate) (match ID 5)
* Add 2 Part 3839b Light Gray Plate, Modified 1 x 2 with Handles - Flat Ends, Low Attachment (Alternate) (match ID 6)
* Change 1 Part Blue 3001old Brick 2 x 4 without Cross Supports {match ID 0 to 3}
* Change 2 Part Red 3001old Brick 2 x 4 without Cross Supports {match ID 0 to 5}
* Change 2 Part Light Gray 3839a Plate, Modified 1 x 2 with Handles - Round Ends, Mid Attachment {match ID 0 to 6}
Comments from Submitter:
Red and blue bricks 2 x 4 no. 3001 (with a central stud cross support) and plates modified 1 x 2 with handles no. 3839b (flat ends, low attachment) are included in my 733-1 that I have owned since my childhood.