Any brand of modern oil will work just fine - pick your poison.
Your Castrol selection would be just fine.
The only thing to ponder is whether or not there is any appreciable amount of sludge in the pan. If an engine has been sitting for a long time (and especially if it had old non-detergent oil in it), then there can be a thick sludge layer in the bottom of the pan. You don't want to start/run it with this crap in the pan . . . especially while throwing modern detergent oil in, loosening up all the old crap and pumping it through your engine/bearings.
What I recommend is pulling the pan, inspecting the bottom of it for any metal or other signs of bearing or other component failure, cleaning it out well and putting new gaskets in it. If you know the engine and it had good oil pressure before sitting, then you can use the old pump. Or, you can ponder putting a new oil pump in it while you have it all apart. Most of us run the 49-53 style pumps, with a 49-53 truck pickup.