no instument panel fuse block cover '95

[jimh]

I want to do a compression check on my friends '95 Camaro.
Looking at the Chilton manual, I removed the IGNITION fuse from the underhood fuse block.
Then I went to remove the PCM IGN fuse from the instument panel buse block, only to find there was no cover on it to guide me to which fuse to pull. I've looked on the forum but can't find a picture of the cover or even a slot number.
Or, can I pull the two 7.5 amp injector fuses from the underhood fuse block?
I just don't want to start cranking the engine with the plugs pulled and have gas spraying around.
Thanks in advance for any help.
Jim

Update, what should the compression be? My guage says 160,175,170 on drivers side from front to back, and 175,150 and 175 on the passenger side from from to back. Those numbers sound high for a 3.4L V6 for an old motor.
Chilton manual says 100 psi minumum with 30% difference from highest to lowest.
P.S. Car runs like crap, smokes like running very rich. If these numbers are way high, what would this indicate?