Open ini\armor.ini, and find the following
[Armor367000000]
Mesh=207000000
Texture=367000000
Change the mesh to 367000000, save and exit.
Open ini\3dobj.ini, scroll to bottom and add:
367000000=c3/monster/207/100.c3
Open ini\3dmotion.ini, scroll to bottom and add
0367000100=c3/monster/207/100.c3
0367000101=c3/monster/207/101.c3
0367000102=c3/monster/207/101.c3
0367000103=c3/monster/207/101.c3
0367000105=c3/monster/207/100.c3
0367000110=c3/monster/207/110.c3
0367000120=c3/monster/207/120.c3
0367000121=c3/monster/207/121.c3
0367000125=c3/monster/207/120.c3
0367000126=c3/monster/207/121.c3
0367000130=c3/monster/207/120.c3
0367000131=c3/monster/207/120.c3
0367000132=c3/monster/207/120.c3
0367000140=c3/monster/207/401.c3
0367000150=c3/monster/207/101.c3
0367000151=c3/monster/207/101.c3
0367000160=c3/monster/207/101.c3
0367000170=c3/monster/207/101.c3
0367000180=c3/monster/207/101.c3
0367000190=c3/monster/207/101.c3
0367000200=c3/monster/207/101.c3
0367000210=c3/monster/207/101.c3
0367000220=c3/monster/207/101.c3
0367000230=c3/monster/207/101.c3
0367000231=c3/monster/207/101.c3
0367000250=c3/monster/207/101.c3
0367000260=c3/monster/207/101.c3
0367000261=c3/monster/207/101.c3
0367000270=c3/monster/207/101.c3
0367000271=c3/monster/207/101.c3
0367000280=c3/monster/207/101.c3
0367000300=c3/monster/207/300.c3
0367000305=c3/monster/207/100.c3
0367000310=c3/monster/207/310.c3
0367000315=c3/monster/207/100.c3
0367000320=c3/monster/207/320.c3
0367000321=c3/monster/207/320.c3
0367000322=c3/monster/207/320.c3
0367000323=c3/monster/207/320.c3
0367000330=c3/monster/207/330.c3
0367000331=c3/monster/207/331.c3
0367000332=c3/monster/207/330.c3
0367000333=c3/monster/207/331.c3
0367000334=c3/monster/207/330.c3
0367000335=c3/monster/207/331.c3
0367000336=c3/monster/207/330.c3
0367000337=c3/monster/207/331.c3
0367000340=c3/monster/207/330.c3
0367000341=c3/monster/207/331.c3
0367000342=c3/monster/207/330.c3
0367000343=c3/monster/207/331.c3
0367000344=c3/monster/207/330.c3
0367000345=c3/monster/207/331.c3
0367000346=c3/monster/207/330.c3
0367000347=c3/monster/207/331.c3
0367000370=c3/monster/207/330.c3
0367000371=c3/monster/207/331.c3
0367000401=c3/monster/207/401.c3
0367000402=c3/monster/207/402.c3
0367000403=c3/monster/207/403.c3
0367000404=c3/monster/207/401.c3
0367000405=c3/monster/207/401.c3
0367000406=c3/monster/207/401.c3
0367000407=c3/monster/207/401.c3
0367000408=c3/monster/207/401.c3
0367000600=c3/monster/207/401.c3
0367000903=c3/monster/207/401.c3
Optional: TO change the size, go to ini\AdditiveSize.ini, scroll to index 367, and edit the data there.
Screenie: