Check out AG Composites stocks. Lots of left handed offerings. I have 3 now and each was a drop in for my Proof and Rem 700 (SA) rifles.

This one is very nice. https://agcomposites.com/stock/3/ag-carbon-all-terrain-cat

They are a decent value in stocks and can be ordered any way you want them. Most of their models are available left handed.

Good luck