Please excuse some of the terms used in this post I am no a coder by trade I'm used to 3D Max

I'm working on a mod and trying to help find a solution for a programmers working with me. What we want to do is have giant characters in the world. In the past we've been able to do use the modelscale command in radiant to enlarge static / custom models but in this case we want to have giant enemy bots, so the quick fix doesn't work.

I've tried to export a scaled up version of several models from 3dmax but it seems to corrupt the .md3. Does anyone know of any nice ways of scaling characters either by code or 3D tech. If not does anyone know of any past mods that have tried this sort of thing?