Anyone know why Saturn V IU and lem shroud parts are missing from express RP-1 install?

I thought BDB was on the black list of mods per RP-1 github? But a bunch of apollo BDB parts are included in the express install. So I'm confused..

What should I download to get the remaining Saturn / apollo parts?

I remember many years ago in one of my modded playthroughs, there were pre made LEM shroud petals and the S IV B instrument unit ring they sit on...