I do not know of anyone selling new- either OEM or aftermarket, but keep an eye on fleabay and google 380CD oil pickup for sale now and then, there are online places that specialize in secondhand chainsaw parts and stock changes often.
Scrap saws, parts saws, marketplace etc.
Without checking- I imagine any pickup from a 180 to a 480 would work, maybe other models as well of a similar vintage.