EDIT: Yes you can! If you own Ace you can! Apparently the $Big_Monsters size is well covered in MV. (Sorry, I kinda read the opposite of what you typed in your post. ^^ But I will leave my old answer below for those not owning RPGMaker Vx Ace.)
------> OLD ORIGINAL POST (For those not having RPGMaker VX Ace and planning to use what I posted here in your MV games.);
Well those are made for Ace and the main frontal models were directly made of the Ace RTP so technically if you don't own Ace... err... sorry!
You can link your request to Lunarea or another mod and ask if I kinda enough modded it... but still the monsters models are from the basic RTP for Ace.
You know, attack from the south and sides maybe.
I admit since MV I am tipoeing around since most folks around here had Ace and now I am like... do I reconvert? Do I just make MV facesets and then resize down to Ace?