Uploaded a bunch of images that were donated by a kind member Got most of the IDs, but a few left (and somebody should check that my IDs are all correct, esp. since I haven't watched the film myself in ages):

http://hkmdb.com/db/movies/images.mhtml?id=5923&display_set=eng

1. Freckle-face - Max Lee

2. Umm, looks like Natalis Chan


3. These guys are up to no good, no doubt


4. WFH's friends - Brandy Yuen, Max Lee & ?


5. San Kuai

6. Students - Jackie Chan, Chiang Kam... Max Lee again?



7. With Fung Ging Man


8. In the background - Max Lee, ?

1. Max Lee (the guy who says to Bruce Lee "you must be tired of living" in Fist of Fury)

4. Max Lee, dunno, Brandy Yuen (Yuen Woo Ping's younger brother who also doubled his father, Yuen Siu Tien, for the acrobatic movements)

The fat boy is Chiang Kam (6,7) as you already know!
5 is San Kuai indeed.
8 in the background at the right is Max Lee again.

I had the impression that Tino Wong Cheung is doubled by Yuen Shun Yee in the swordfighting scene (the guy with his arm between the camera and his face)