Call or email boyds, I found nothing on their site either but when i called them they said they would do it but the lead time was out their. Richards Microfit does list the LH models on their site, link:
http://www.rifle-stocks.com/
I actually had a local stock maker make me what I wanted, so that is another option. Just call a few gunsmiths in your area and they should be able to point you in a direction.
G/L