Can anyone link me to some 1.3b player models?

those are about 3 years old, I don't know of any place that would still have any uploaded. Zeroping was the download site back in the day, you might try seeing if they are still open and have any left.

I think he means 1.3b models that have been converted to Retail.

EDIT: As of now, I know of no actual conversions, just recolors of the default skins to resemble them. I tried my damnedest to get the old models working but couldn't. Even PIU was stumped.