I don't know squat about the tranny, that's jjrichar's specialty. But if you're going this route, I would definitely change your tranny mounts while you've got everything out of the way.
The Guibo and Center Support Bearing would be nice to do as well, but it's not imperative and since you are taking everything apart, it will be easy when you do decide to do it.
I was very intimidated by the exhaust before I did it. No biggie. Wear goggles, all kinds of crud will be dropping down as your banging around. I had some dirt get in my eye and had to go to the Medifast office to have it removed.
Get new gaskets (cheap) for your reassembly, yours will be rusted out.
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