* Delete 5 Part 3684 Dark Bluish Gray Slope 75 2 x 2 x 3 (Undetermined Type)
* Add 5 Part 3684a Dark Bluish Gray Slope 75 2 x 2 x 3 - Hollow Studs
* Delete 1 Part 30237 Light Bluish Gray Brick, Modified 1 x 2 with Clip (Vertical Grip) (Undetermined Type)
* Add 1 Part 30237a Light Bluish Gray Brick, Modified 1 x 2 with Split U Clip Thick (Vertical Grip)
* Delete 3 Part 2453 Reddish Brown Brick 1 x 1 x 5 (Undetermined Type)
* Add 3 Part 2453a Reddish Brown Brick 1 x 1 x 5 - Hollow Stud
* Delete 5 Part 3684 Dark Bluish Gray Slope 75 2 x 2 x 3 (Undetermined Type)
* Add 5 Part 3684a Dark Bluish Gray Slope 75 2 x 2 x 3 - Hollow Studs
* Delete 1 Part 30237 Light Bluish Gray Brick, Modified 1 x 2 with Clip (Vertical Grip) (Undetermined Type)
* Add 1 Part 30237a Light Bluish Gray Brick, Modified 1 x 2 with Split U Clip Thick (Vertical Grip)
* Delete 3 Part 2453 Reddish Brown Brick 1 x 1 x 5 (Undetermined Type)
* Add 3 Part 2453a Reddish Brown Brick 1 x 1 x 5 - Hollow Stud