If you just wanna know how high the model extends above the origin, it's 32 units. If you want their view origin...
PHP Code:
new Float:userOrigin[3], Float:originOffset[3]
pev(id, pev_origin, userOrigin)
pev(id, pev_view_ofs, originOffset)
new Float:viewOrigin[3]
viewOrigin[0] = userOrigin[0] + originOffset[0]
viewOrigin[1] = userOrigin[1] + originOffset[1]
viewOrigin[2] = userOrigin[2] + originOffset[2]