Don't have that exact board for reference, and Pina says the reference designators do change between Mac US, Mac International, and SE|SE/30 versions. So perhaps you will have to do some reverse engineering to figure out your analogous designators. On the SE analog board Pina says change CR2, Q2, CR3, and CR5 to be safe. These parts are in places where if stuff goes wrong the current flow could be big.

CR2 MR854 anode grounded, cathode goes to flyback pin 2

Q2 BU406 collector goes to flyback pin 1 and the anode of CR4 which is not on Pina's recommend to change list.

CR3 MR854 cathode goes to flyback pin 3

CR5 1N4937 anode goes to flyback pin 8

The flyback pins are numbered 1 thru 8 counterclockwise from the solder side, and on the component side look for pin 1 designated in silkscreen. Pin 6 is a no connect.

In Tom Lee's Classic Mac Tech Docs v2.0 figure 10, these parts correspond to CR5, Q3, CR1, and CR10. Tom also says GI854 is same as MR854. The CR4 on the SE analog board corresponds to CR11 on Tom's figure 10.

You also might consider changing two electrolytics, if not all of them. On Tom Lee's figure 10, consider the infamous C1 if it has not already been upgraded to film, and also the capacitor with no reference designator (220uf/16V) that connects from the anode of CR1 to flyback pin 4. Both of these have to block DC and pass a respectable amount of AC current at the same time. They could be trouble also. Also C14 (22uf/50V): normally not much power, but if it shorts, not good.

Hope this helps