Cab is considerably more than 200 lbs. I would say my extended cab with front clip and seats removed hit in between 7 & 800 Lbs. (Maybe more...It's most of the truck) That's judging by the amount of effort I had to use on the chain hoist to lift it. You also need to be able to lift it high enough to roll the chassis out from under it.
If you have the front clip removed subtract maybe 150-200 Lbs overall. Core support and sheet metal are not that heavy.
Hint: Don't use a crappy Chinese come along if you plan to lift the cab. Get a real hoist.