ho428, Power steering? Yes and no. My car is manual steering. Except for the steering box and pitman arm, I bought the accessory package off a Tempest; PS pump, alternator with double groove pulley, double groove fan pulley, all the brackets, bolts, belts and PS lines. I bought everything to have it, not necessarily to reuse everything. I haven't installed any of this, but this would be included.
My car does not have AC.
I'm putting in a SBC so I'm replacing everything; engine frame mounts, clutch linkage, bellhousing, flywheel, etc. This will be a complete package. If I get my 4-speed in time, it'll include the 3-speed and shifter too. If one wants to put this into another Firebird, there won't be much you'll have to buy elsewhere.
The OHC 6 is plenty for me, but I can't rebuild it and accessorize it with multiple choices from multiple sources like I can a SBC. Twenty years from now when I hand this car down to my sons, this problem will only be worse. I prefer the Chevy mechanicals, but the Firebird is far better looking. I'll have the best of both worlds.