Well I did this job a few days ago on my 1FZ-F (FZJ75 pickup). I'm not too bright so here's some things for other people doing this in the future:
I used the hammer tool (above) for the keepers. It captures the keeper cap and halves with a magnet after you whack it with a hammer over the valve. Then you whack it with a hammer to install it again, very easy to use. (Use forceps to remove the keeper halves from the tool).
This was my set up for the spark plug hose, assembled from an
Amazon compression tester, a tube from a vacuum gauge (but any hose would work), and random fittings from a cheap
Amazon compressor fittings kit. On the spark side I just used a zip tie and a piece of wire. A hose clamp made it too wide in the spark tube and not seat easily in the threads.
I have a basic little compressor with a tank. Each cylinder drained air at a different rate. My compressor couldn't quite keep up but the fully charged tank left tons of margin in case of power loss or something. I set the pressure to 50 PSI on the line. We let the tank fully recharge between cylinders and cool down to avoid any duty cycle issues.
The main air loss was the spark plug since you can't torque down the fitting just holding a hose obviously. I just put a paper towel around the hose and jammed it in the top of the spark plug tube.
A competent helper was a great help. One person whacked the keeper off and replaced the seal, meanwhile the other person reassembled the keeper and spring and placed it for person one to whack back in place. Once we had the rhythm we were flying. Took like 4 minutes per cylinder for the last 4.
The OTRAMM videos was were all we used for the cam stuff.
The glorious 70 series engine bay is easy to work in. The hood opens like 70 degrees (held open with a ratchet strap from the back of the cab). Then no EFI = no throttle body in the way. And no heater valve blocking cylinder 6 made it a piece of cake at the end