Missing pylons, and drop tanks

[Brainless]

Hi anyone know where I can find the following missing parts from downloaded aircraft here.

wf_us_pilot
wep_pylon_p51tank
wep_us_110gal_tank
wep_pylonr_p51tank
wep_dp_p47_75gal drop9p
wep_us_f4u_drop_tank
wep_p47_165gal_drop
wep_p47_308gal_drop
drop_tank_50gal (Curtiss P-40E)

I just don't understand why aircraft are made available to download with parts missing and no information where to find them! (please don't take this as a derogatory comment I fully appreciate the time and trouble people take to create these marvelous expansions).

On reflection I think it may just be missing mdl names but since I don't know the text lines I can't add them. The drop tanks appear to be available as they come up in the weapons list in the sim.

Also in the Brewster the aircraft loads but a library message pops up with 'can't find raf_pilot' even though this shows up in the cockpit after loading in the sim!