Alt and power steering.
Mine is a V4P car so it has the mech fan, so that adds another 10-20 min to take off, not too bad really, being I don't do often.
I have to recall now, but pull alt off, I think the pulling the PS pump was not too bad, then pull the bracket off, and everything but the AC on that side comes off. Then great access to the Opti.
Remember, the Opti ISN'T as failure prone as most give it.
1. You STILL need to change the cap and rotor like any other car. Not distributorless car. You need to swap it out 100k or LESS.
2. When you do, change ALL the seals, don't slap it back together with old seals. That is inviting damage. Water leakage is the #1 Opti killer, I have personally not seen any Opti's fail that weren't due to water leakage.
3. Plugs and wires still have to be replaced, just like the cap and rotor, but not replacing them causes high voltage to have to find a way out and if water is present, you have the issue.
4. Water is the Opti killer, did I mention? Opti Vacuum Harness. It should be checked and ensure in 100% tip top shape all the time. I checked mine around ever 6 months. Easy. Unhook the vacuum line to the air intake, put on a gauge. It should read up to around 15 inches of vacuum fairly quickly, like a couple seconds. If not, you have a leak. Replace all hoses, they often get greasy and the hoses deteriorate on the Opti and leak and water gets in. OR not a good vacuum seal, and water gets in.
One way to help reduce moisture in the Opti is to route the vacuum hose that goes in the air intake to the passenger compartment. That air is much less humid in the summer than the incoming air. I don't think necessary, but it is an improvement.
The Opti has a very bad rap and honestly I feel a majority of it is very unfounded. Most led to poor maintenance. Early failures did exist, but the internet has made them sound like they are 1 in 2 failures, when they are more like 1 in 200k failures.