Molybdenum Bisulfide vs. Disulfide?

Perhaps a stupid question, but the WSM calls for “Molybdenum Bisulfide” for the catalytic convertor-to-manifold screws. Is this a grease or a powder?
Specifically, I was checking the torque specs for the cat-to-manifold bolts, as I’m replacing a few due to stripped threads from many previous r&r’s over the years. The WSM calls to lubricate the screws with “molybdenum bisulphide”. Elsewhere, it mentions “molybdenum bisulphide grease” for other exhaust bolts.
Either way, I can’t find any molybdenum bisulphide for sale in the US, but I’ve found plenty of molybdenum “disulphide” grease for sale.
Re: the bisulphide, I’ve found it in both dry/powder form, and grease. As the WSM mentions both “molybdenum bisulphide” for the screws, and “molybdenum bisulphide grease” elsewhere, I’m just wondering which one I should be using on these screws, since the nuts are $18 a piece from some sources, and I’d like to do it once and do it right; or is this just another WSM typo oversight?

I know, I’m way overthinking it. Welcome to my life

 

Thanks Dominick. What’s the advantage of nickel anti-seize?
Also, was Ferrari specifically wanting the bisulfide vs the disulphide? Or are they interchangeable in this application?

 

Too late. They’re in the mail. I couldn’t find a replacement for the locking nuts, and the nylock nuts I’ve used in the past have meted, naturally. The bolts were only 90 cents each, I still have sleeves, springs and washers in good condition, and I was able to source the split nuts for $8 each. Still expensive, but better than most other sources.

 

Nice. Hadn’t heard of aero nuts before. I’ll check them out.