Yes, we have the canvas and pipe racks from GENERAL POPE in Suisun Bay.
We can all take some comfort in the fact that when a sub went to the yard, it always got back fewer original racks than were removed at the start of the work... and the missing racks were replaced by just these pipe racks.. so we aren't trying to graft a monkey's head on the body of Venus.
Here is a bit of sub trivia... I went over COD's plans to find the blueprint for the stainless steel racks... so as to have them made in a shop (the Cleveland reservists removed them in 1959 when COD arrived in town to make the AB space a classroom

But I discovered that the EB fleet subs had 14 DIFFERENT bunk variations!!!!! And Portsmouth boats had MORE!!! There are about 86 bunks on a fleet sub -- which means that they damn near were custom fitted!
The good news is that Portsmouth subs, especially later BALAOs, were subsituting regular steel forthe stainless racks.
PF