iirc in game_lib.lua
--This function should correctly apply the ship suit for any players in the player list
local player_list = player_names_get_all()
local add_to_wardrobe = false
--Remove all clothing before we put on...
This mod doesn't add any homies to call up, it just re-enables the menu to do so.
I suggest using Additional Cheats (Saints Row IV Ports) ported by Fan of Saints to populate the vehicle delivery menu.
As for homies, I'm not sure if there is a mod that adds any homies.
Can't check at the moment but the scripts should all be in the sr3_city_0.vpp_pc and then in the individual mXX_modal.str2_pc
The lua file for each mission should be there, the files will then need to be repackaged and the associated ASM will need to be updated.
Sorry I can't help any further...