https://www.rugbyleagueproject.org/seasons/nswrfl-1975/round-4/south-sydney-rabbitohs-vs-penrith-panthers/summary.html
SS: In the video I can see 1-7 + 12 + 22-24 + 26, but no number 8. At 0:08 you can see number 13 who was Harry Eden listed in BL. So, either Eden played or it was Sait originally listed in 8 or it was the replacement Kovacs listed in 34. There was no number 16, so I would suggest that O'Donnell played in the number 5 as per BL.
PP: In the video I can see 1-12 + 16. I can see number 16 at 0:05. In BL, 3. Quinn, 4. West, 9. Hodge & 10. Ashurst.
https://www.youtube.com/watch?v=jOtEjs15H9o