Looking for an off cut of Epoxy glass tube 2" (50mm) outside diameter by 1-1/2"(40mm) internal diameter 3-1/2"(90mm) long. The type sold for stern tubes would be ideal.
I've got a 480mm length of GRP that's 50mm od and 38mm id (you assessed 1 and 1/2 as 40mm but it isn't, it's 38mm) if that's of any interest. It was invoiced to me as GRP so not epoxy but it has been fine as the stern tube in my boat for the last 8 years. Anyway £30 plus postage for the 480mm length. Photo available if needed.