>>1902730as a sidenote
>loading both bikini and normal clothes and putting them in the same position to see if there are any differences between meshes>my heart whenbrb gotta mix the twintails with the normal hair
also there aren't any differences, at least their body meshes are similar
>>1902732you're welcome anon, and if it makes you feel any better, the headswap is easy in pmx editor:
>take head, erase any rigid bodies and physics that aren't from the head, save it as a different model> load the rin model again and now erase the head and anything related to it, resize it to your hearts content (0.7-0.8 is the sweet spot for a loli body)>import head and move it to the new body and save it>???>profit!and you don't even need to remove the bones in this case, since is the same model and the bones with the same name will be merged
also in the case you have an old pc, the model could probably crash mmd, if that happens, make resize the big textures (the ones of 1024x1024) at 50%