KK, You are in luck. Looks like Davidsons has some of every model still.
Here is the complete list:
All stainless:
Compact (18" bbl, 12.5" LOP)
#6941 .243
#6942 7mm-08
6940 .308
Standard stainless (22" barrel, standard LOP)
#6933 22-250
#6935 .223
#6932 .243
#6930 .270 Win
#6934 7mm-08
#6929 30-06
#6931 .308
For the compact ones, you can put a standard length stock on it (that's what I did with my .243). It would work the other way as well, but Ruger does not offer the compact stock as a spare part (some of their parts people don't even know about this run of guns for Davidsons. They don't catalog a compact left hand American yet.
Maybe they were confused, but I was able to get a price for a LH compact stock from their customer service. IIRC it was $70. I had to give them the item # from Davidson's for the LH compact for them to find it. It was not in their regular parts inventory list.